Utilisation des structures

**bouritosse** · 30/11/2013, 12h35

Je suis en train de rajouter des structures
à un programme de mise en niveau de gris.

Le programme principale:

exemple d'utilisation si image .ppm

-i baboon.ppm -o bazb.ppm -g
(fait une mise en gris)

Comme vous pouvez tester à l'exécution j'ai rajouté des printf
afin de voir ou le nom de fichier était mal lu et je ne comprends pas
comment faire pour le régler.

J'ai ça qui s'affiche:
ligne 200:baboon.ppm
ligne 200:baboon.ppm
ligne 20:baboon.ppm
ligne 98:�t
ligne 313:�t
ligne 251:baboon.ppm

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <math.h>
#include <unistd.h>
 
#define TAILLE_MAX 3
 
typedef struct{
char *Itab;
char *Otab;
}Image;
 
#include "Function.h"
#include "Function.c"
 
int getInput(Image *Im,char *tab1);//nom du fichier d'entré
int getOutput(Image *Im,char *tab1);//nom du fichier de sortie
 
int main(int argc, char *argv[]) {
 
    Image Im;
    int e;
    int max = 3000;
    int count;
    char kernel [20];
 
    int optch;
    extern int opterr;
 
    char format[] = "gb:o:i:";
 
    opterr = 1;
 
    while ((optch = getopt(argc, argv, format)) != -1)
    switch (optch) {
       case 'i':
            printf ("Paramètre i rencontré avec argument %s\n", optarg);
            getInput(&Im,optarg);
           // printf("%s\n",Im.Itab);
            e=saturation(&Im);
            break;
        case 'o':
            printf ("Paramètre o rencontré avec argument %s\n", optarg);
            getOutput(&Im,optarg);
          //  printf("%s\n",Im.Otab);
            break;
        case 'g':
	    writeFileWithGrayScale(charToIntWidth(heightAndWidth(&Im)),charToIntHeight(heightAndWidth(&Im)),e,&Im,max);
            break;
        case 'b':
            printf ("Paramètre b recontré\n");
            break;
    }
 
    return 0;
 
}
 
int getInput(Image *Im,char *tab1){
 
int i=0;
 
Im->Itab=malloc( sizeof(tab1)*sizeof(char));
 
while(tab1[i] != '\0'){
	Im->Itab[i]=tab1[i];
	i++;
	}
}
 
int getOutput(Image *Im,char *tab1){
 
int i=0;
 
Im->Otab=malloc( sizeof(tab1)*sizeof(char));
 
while(tab1[i] != '\0'){
	Im->Otab[i]=tab1[i];
	i++;
	}
}

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#define TAILLE_MAX 3
#include<math.h>
#include "Function.h"
 
 
 
/*************GRAYSCALE*********************************************************/
/*******************************************************************************/
 
int** grayScale(int width, int height, int saturation, int max,Image *Im)
{
    int i = 0;
    int j = 0;
    int k = 0;
    int l = 0;
    int **q;
    int summ = 0;
    int counter = 0;
    printf("hello\n");
   int **p = (int **)malloc(sizeof(int*) * height);
 
    if (getFormOfMatrix(width, height,&Im) == 0)
    {
        q = matrixByColumnToMatrixP3(width, height, saturation,Im);
    }
    else
    {
        q = transformArrayOfCharInMatrixP3(width, height, max,Im);
    }
    for (i = 0; i < height; i++)
    {
        p[i] = (int*) malloc(sizeof(int) * width);
        for (j = 0; j < (width * 3); j++)
        {
            summ = summ + q[i][j];
            counter++;
            if ( counter == 3)
            {
                p[k][l]= (summ / 3);
                //printf("sum:%d k:%d l:%d \n",(summ/3), k,l);
                if ( l != (width-1))
                {
                    l++;
                }
                else
                {
                    l = 0;
                    k++;
                }
                summ = 0;
                counter = 0;
            }
        }
    }  
    return p;
}
 
void writeFileWithGrayScale(int width, int height, int saturation, Image *Im,int max)
{
    int i = 0;
    int j = 0;
    FILE* newFile = NULL;
    int **p = grayScale(width, height, saturation, max,Im);
    newFile = fopen(Im->Otab, "w");
    fputs( "P2\n", newFile);
    fprintf(newFile, "%d %d\n", width,height);
    fprintf(newFile,"%d\n", saturation);
    for ( i = 0; i < height;i++)
    {
        for ( j = 0; j < width; j++)
        {
            if ( j == 0)
            {
                fprintf(newFile,"%d", p[i][j]);
            }
            else if (p[i][j] <= 9 )
            {
            fprintf(newFile,"  %d", p[i][j]);
            }
            else{fprintf(newFile," %d", p[i][j]);}
        }
        fprintf(newFile, "\n");
    }
    fclose(newFile);
}
/////////////////////////////////////////////////////////////////////
//////////////////////////getFormOfMatrix////////////////////////////
/////////////////////////////////////////////////////////////////////
 
int getFormOfMatrix( int width, int height,Image *Im)
{
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
    printf("ligne 98:%s\n",Im->Itab);
    if (countlines(Im) >= ((width * height) + 3))
        {
            return 0;
        }
    return 1;
}
/////////////////////////////////////////////////////////////////////
//////////////////////////WHEREISTHESPACE////////////////////////////
/////////////////////////////////////////////////////////////////////
 
// This function give you the position of the space in a string between two elements
// It needs only the line with both of height and width
 
int whereIsTheSpace(char *lineOfHeightAndWidth)
{
    int i;
    int n = strlen(lineOfHeightAndWidth); // we catch the length of the line with the width and the height
    for(i = 0; i <= n; i++)
    {
        if (lineOfHeightAndWidth[i] == ' ')
        {
            return i; // we return the position where the space is
        }
    }
}
 
/////////////////////////////////////////////////////////////////////
//////////////////////////////SATURATION/////////////////////////////
/////////////////////////////////////////////////////////////////////
 
// function which extract the saturation of a picture and return a number
// It needs only in parameter the name of the file you what to extract its saturation
 
 
int saturation(Image *Im)
{
 
    int i;
    int saturationNumber;
    char saturationString[10] = "";
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
    printf("ligne 141:%s\n \n",Im->Itab);
    for (i = 1 ; i < 4 ; i++) // counter
        {
            fgets(saturationString, 10, file); // we select only the third line of the file
        }
    fclose(file);
    saturationNumber = atoi(saturationString);
    return saturationNumber;
}
 
 
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////
 
int charToIntWidth(char *lineOfHeightAndWidth) // Find the width from the line with both height and width
{
    char widthChar[10] = ""; // The width only
    char aNumber[10]= ""; // A char from the string in parameter
    int width; // The value which we will return
    int i; // counter
    int n = whereIsTheSpace(lineOfHeightAndWidth);
    for (i = 0; i < n; i++) // We will put the value of the main string in our variable until we will found a space
    {
        *aNumber = lineOfHeightAndWidth[i];
        strcat(widthChar, aNumber); // We concatenate our new variable with the number from the main string
        strcpy(aNumber, "");
    }
    width = atoi(widthChar);
    return width;
 
}
 
int charToIntHeight(char *lineOfHeightAndWidth)
{
    char heightChar[10] = "";
    char aNumber[10]= "";
    int n = whereIsTheSpace(lineOfHeightAndWidth);
    int i = n; // counter
    int height;
    while(lineOfHeightAndWidth[i]!='\n') // We stop to looking for the height when we met a '\n'
    {
        *aNumber = lineOfHeightAndWidth[i];
        strcat(heightChar, aNumber);
        i++;
 
    }
    height = atoi(heightChar);
    return height;
}
 
/////////////////////////////////////////////////////////////////////
//////////////////////////HEIGHTANDWIDTH/////////////////////////////
/////////////////////////////////////////////////////////////////////
 
char* heightAndWidth(Image *Im) // function which extract the Height and the width of a picture
{
    int i;
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
        printf("ligne 200:%s\n",Im->Itab);
    char* valueOfHeightAndWidth = malloc(21*sizeof(char));
    for (i = 1 ; i < 3 ; i++) // counter
    {
        fgets(valueOfHeightAndWidth, 21, file); // we select only the second line of the file
    }
    fclose(file);
    return valueOfHeightAndWidth;
}
 
 
 
int** matrixByColumnToMatrixP3(int width, int height, int saturation,Image *Im)
{
    int i = 0;
    int j = 0;
    int seuil = ((saturation + 1) / 2);
    char pixel[10];
    FILE *file = NULL;
    FILE* newFile = NULL;
    file = fopen(Im->Itab,"r");
        printf("ligne 221:%s\n",Im->Itab);
    newFile = fopen(Im->Otab, "w");
        printf("ligne 223:%s\n",Im->Otab);
    fputs( "P1\n", newFile);
    fprintf(newFile, "%d %d\n", width,height);
    int **q = (int **)malloc(sizeof(int*) * height);
    for ( i = 0; i < 3; i++)
    {
        fgets(pixel,  10, file);
    }
    for ( i = 0; i < height; i++)
    {
        q[i] = (int*) malloc(sizeof(int) * (width * 3));
        for ( j = 0; j < (width * 3); j++)
        {
            q[i][j] = atoi(fgets(pixel, 10, file));
        }
    }
    return q;
 
}
 
 
int** transformArrayOfCharInMatrixP3(int width, int height, int stringMax,Image *Im)
{
    int i = 0;
    int j = 0;
    int k = 0;
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
            printf("ligne 251:%s\n",Im->Itab);
    char lineOfPixel[stringMax];
    int *line;
    int **p = (int **)malloc(sizeof(int*) * height);
    for(i = 0; i < 3; i++)
    {
        fgets(lineOfPixel, stringMax , file);
    }
    for (i = 0; i < height ; i++)
    {
        p[i] = (int*) malloc(sizeof(int) *(width * 3));
        fgets(lineOfPixel, stringMax , file);
        line = explode(lineOfPixel, ' ', width * 3);
        for (j = 0; j < (width * 3) ; j++)
        {
            p[i][j] = line[j];
        }
        free(line);
    }
    return p;
}
 
int* explode(char* stringToExplode, char separator, int width)
{
    int i = 0;
    int *finalArray = malloc(sizeof(int) * width);
    int indicator = 0; // If several separators follow each other
    int buffer = 0;
    int cursor = 0;
    int length = strlen(stringToExplode);
    for (i = 0;i < length;i++)
    {
        if ( stringToExplode[i] == separator && indicator == -1)
            {
                finalArray[cursor] = buffer;
                cursor++;
                indicator = 0;
                buffer =  0;
            }
        else if ( stringToExplode[i] != separator && stringToExplode[i] != '\n')
            {
                buffer = buffer * 10 + (stringToExplode[i] - 48);
                indicator = -1;
            }
    }
    finalArray[cursor] = buffer;  // Because the last value is not register
    return finalArray;
}
 
/////////////////////////////////////////////////////////////////////
////////////////////////////COOUNTLINE///////////////////////////////
/////////////////////////////////////////////////////////////////////
 
 
// This function counts the number of lines in the file
// It needs only the name of the file which you want to extract its number of line
 
 
int countlines(Image *Im)
{
  FILE *file = NULL;
  file = fopen(Im->Itab,"r");
          printf("ligne 313:%s\n",Im->Itab);
 
  int ch=0;
  int lines=0;
 
  if (file == NULL)  // If the file is unreachable we will return 1
    return 1;
    while(!feof(file)) //each time we will meet a '\n' we will increase the number of lines
    {
        ch = fgetc(file);
        if(ch == '\n') // if we meet a '\n'
        {
        lines++;
    }
    }
    fclose(file);
    return lines;
}

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/*********Prototypes*******************/
/*************************************/
/*
int maxint(int first, int second);
int minint(int first, int second);
 
char* magicNumber(char *nameOfFile);
int arrondi(float number);
*/int countlines(Image *Im);/*
int getTheMaxSizeOfAString(char *nameOfFile);
*/char* heightAndWidth(Image *Im);
int whereIsTheSpace(char *lineOfHeightAndWidth);
int charToIntWidth(char *lineOfHeightAndWidth);
int charToIntHeight(char *lineOfHeightAndWidth);
 
int saturation(Image *Im);
int* explode(char* stringToExplode, char separator, int width);
//int getFormOfMatrix( int width, int height,Image *Im);/*
 
int** matrixByColumnToMatrixP1( char* nameOfFile, int width, int height, int saturation);
int** matrixByColumnToMatrixP2( char* nameOfFile, int width, int height, int saturation,char* nameOfOutputFile);
int** matrixByColumnToMatrixP3(int width, int height, int saturation,Image *Im);/*
 
int** transformArrayOfCharInMatrixP1( char* nameOfFile, int width, int height, int stringMax);
int** transformArrayOfCharInMatrixP2( char* nameOfFile, int width, int height, int stringMax);
*/int** transformArrayOfCharInMatrixP3(int width, int height, int stringMax,Image *Im);/*
 
int** binarisation(int width, int height, int saturation, char* nameOfFile, int max,int temp,char* nameOfOutputFile);
 
//void fileCopyP1 (char* nameOfFile,int max);
//void fileCopyP2 (char* nameOfFile, int max);
//void fileCopyP3 (char* nameOfFile, int max);
 
void writeFileWithBinarisation(int width, int height, int saturation,char* nameOfFile, int max,char* nameOfOutputFile,int temp);
*/
void writeFileWithGrayScale(int width, int height, int saturation, int max,Image *Im);
int** grayScale(int width, int height, int saturation, int max,Image *Im);
 
//int max(int* table, int saturation);
/*
void histogram(int width, int height, int sat,char* nameOfFile, int stringMax,char* nameOfOutputFile);
 
int** getKernel(char* kernel);
 
void convolution(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfYourOutputFile);
void convolutionP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfYourOutputFile);
 
void dilatation(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
void dilatationP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
 
void erosion(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
void erosionP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
*/

Je vous remercie pour votre aide !

**diogene** · 30/11/2013, 16h32

fonction getInput() :
Ceci est incorrect

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Im->Itab=malloc( sizeof(tab1)*sizeof(char));

tab1 est un pointeur (char*) et donc sizeof(tab1) renvoie la taille d'un ... pointeur et non pas la taille de la chaine pointée.
Il n'y a donc pas assez de place allouée pour la copie.

Utiliser plutôt

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Im->Itab=malloc(strlen(tab1)+1);

(Le +1 est pour la place du '\0' terminal et sizeof(char) vaut toujours 1)

Idem pour la fonction getOutput()

**bouritosse** · 30/11/2013, 17h37

Merci Diogéne, et pour résumer mon principale problème
c'est de faire ça (désolé pour le scanf, je sais que c'est à éviter):

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/* 
 * File:   main.c
 * Author: jean-jacque
 *
 * Created on November 30, 2013, 5:26 PM
 */
 
#include <stdio.h>
#include <stdlib.h>
 
typedef struct{
char *tab;    
}Ouga;
 
/*
 * 
 */
int main(int argc, char** argv) {
 
    Ouga ou;
 
    ou.tab=malloc(8);
 
    printf("enter variable:\n");
    scanf("%s",ou.tab);
 
    passe1(&ou);
 
    return (EXIT_SUCCESS);
}
 
passe1(Ouga *ou){
 
    printf("passe1:%s\n",ou->tab);
 
    passe2(&ou);
}
 
passe2(Ouga *ou){
 
        printf("passe2:%s\n",ou->tab);
 
        passe3(&ou);
}
 
passe3(Ouga *ou){
 
    printf("passe3:%s\n",ou->tab);
 
}

**diogene** · 30/11/2013, 18h17

- Dans l'appel à passe1() dans main(), tu passes bien l'adresse de la structure (&ou) et dans passe1(), tu accède correctement à son champ tab par ou->tab

- Dans passe1(), tu appelle passe2() qui attend lui aussi l'adresse de la structure, mais tu passes l'adresse de la variable locale ou à la fonction, autrement dit, l'adresse de l'adresse de la structure (ou contient l'adresse de la structure dans cette fonction).
Tu devrais avoir dans passe(1)

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    passe2(ou);

- Idem pour l'appel à passe3() dans passe2()

**bouritosse** · 30/11/2013, 18h59

Merci par contre j'ai un nouveau petit problème technique
très étrange.

Si j'exécute le programme mon image(.ppm) devient gris comme prévu
mais dés que le programme s'arrête l'image devient une bouillit
(mélange de gris et noir)
alors qu'il n'y a quasiment pas d'instructions qui suit.

exemple d'exécution:

./test -i baboon.ppm -o baz.pgm -g

On peut trouver un baboon ici:
http://www.hlevkin.com/TestImages/classic.htm

le main:

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <math.h>
#include <unistd.h>
 
#define TAILLE_MAX 3
 
typedef struct{
char *Itab;
char *Otab;
}Image;
 
#include "Function.h"
#include "Function.c"
 
int getInput(Image *Im,char *tab1);//nom du fichier d'entré
int getOutput(Image *Im,char *tab1);//nom du fichier de sortie
 
int main(int argc, char *argv[]) {
 
    Image Im;
    int e;
    int max = 3000;
    int count;
    char kernel [20];
    char a;
 
    int optch;
    extern int opterr;
 
    char format[] = "gb:o:i:";
 
    opterr = 1;
 
    while ((optch = getopt(argc, argv, format)) != -1)
    switch (optch) {
       case 'i':
            printf ("Paramètre i rencontré avec argument %s\n", optarg);
            getInput(&Im,optarg);
           // printf("%s\n",Im.Itab);
            e=saturation(&Im);
            break;
        case 'o':
            printf ("Paramètre o rencontré avec argument %s\n", optarg);
            getOutput(&Im,optarg);
          //  printf("%s\n",Im.Otab);
            break;
        case 'g':
	    writeFileWithGrayScale(charToIntWidth(heightAndWidth(&Im)),charToIntHeight(heightAndWidth(&Im)),e,&Im,max);
            break;
        case 'b':
            printf ("Paramètre b recontré\n");
            break;
 
 
    }
 
       printf("voulez vous un chien\n");
            scanf("%c",&a);
 
  return 0;
 
}
 
int getInput(Image *Im,char *tab1){
 
int i=0;
 
Im->Itab=malloc( ( strlen(tab1)+1));
 
while(tab1[i] != '\0'){
	Im->Itab[i]=tab1[i];
	i++;
	}
}
 
int getOutput(Image *Im,char *tab1){
 
int i=0;
 
Im->Otab=malloc( strlen(tab1)+1);
 
while(tab1[i] != '\0'){
	Im->Otab[i]=tab1[i];
	i++;
	}
}

Code :

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#define TAILLE_MAX 3
#include<math.h>
#include "Function.h"
 
 
 
/*************GRAYSCALE*********************************************************/
/*******************************************************************************/
 
int** grayScale(int width, int height, int saturation, int max,Image *Im)
{
    int i = 0;
    int j = 0;
    int k = 0;
    int l = 0;
    printf("ligne 20:%s\n",Im->Itab);
    int **q;
    int summ = 0;
    int counter = 0;
   int **p = (int **)malloc(sizeof(int*) * height);
 
    if (getFormOfMatrix(width, height,Im) == 0)
    {
        q = matrixByColumnToMatrixP3(width, height, saturation,Im);
    }
    else
    {
        q = transformArrayOfCharInMatrixP3(width, height, max,Im);
    }
    for (i = 0; i < height; i++)
    {
        p[i] = (int*) malloc(sizeof(int) * width);
        for (j = 0; j < (width * 3); j++)
        {
            summ = summ + q[i][j];
            counter++;
            if ( counter == 3)
            {
                p[k][l]= (summ / 3);
                //printf("sum:%d k:%d l:%d \n",(summ/3), k,l);
                if ( l != (width-1))
                {
                    l++;
                }
                else
                {
                    l = 0;
                    k++;
                }
                summ = 0;
                counter = 0;
            }
        }
    }  
    return p;
}
 
void writeFileWithGrayScale(int width, int height, int saturation, Image *Im,int max)
{
    int i = 0;
    int j = 0;
    FILE* newFile = NULL;
    int **p = grayScale(width, height, saturation, max,Im);
    newFile = fopen(Im->Otab, "w");
    fputs( "P2\n", newFile);
    fprintf(newFile, "%d %d\n", width,height);
    fprintf(newFile,"%d\n", saturation);
    for ( i = 0; i < height;i++)
    {
        for ( j = 0; j < width; j++)
        {
            if ( j == 0)
            {
                fprintf(newFile,"%d", p[i][j]);
            }
            else if (p[i][j] <= 9 )
            {
            fprintf(newFile,"  %d", p[i][j]);
            }
            else{fprintf(newFile," %d", p[i][j]);}
        }
        fprintf(newFile, "\n");
    }
    fclose(newFile);
}
/////////////////////////////////////////////////////////////////////
//////////////////////////getFormOfMatrix////////////////////////////
/////////////////////////////////////////////////////////////////////
 
int getFormOfMatrix( int width, int height,Image *Im)
{
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
    printf("ligne 98:%s\n",Im->Itab);
    if (countlines(Im) >= ((width * height) + 3))
        {
            return 0;
        }
    return 1;
}
/////////////////////////////////////////////////////////////////////
//////////////////////////WHEREISTHESPACE////////////////////////////
/////////////////////////////////////////////////////////////////////
 
// This function give you the position of the space in a string between two elements
// It needs only the line with both of height and width
 
int whereIsTheSpace(char *lineOfHeightAndWidth)
{
    int i;
    int n = strlen(lineOfHeightAndWidth); // we catch the length of the line with the width and the height
    for(i = 0; i <= n; i++)
    {
        if (lineOfHeightAndWidth[i] == ' ')
        {
            return i; // we return the position where the space is
        }
    }
}
 
/////////////////////////////////////////////////////////////////////
//////////////////////////////SATURATION/////////////////////////////
/////////////////////////////////////////////////////////////////////
 
// function which extract the saturation of a picture and return a number
// It needs only in parameter the name of the file you what to extract its saturation
 
 
int saturation(Image *Im)
{
    int i;
    int saturationNumber;
    char saturationString[10] = "";
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
    printf("ligne 141:%s\n \n",Im->Itab);
    for (i = 1 ; i < 4 ; i++) // counter
        {
            fgets(saturationString, 10, file); // we select only the third line of the file
        }
    fclose(file);
    saturationNumber = atoi(saturationString);
    return saturationNumber;
}
 
 
/////////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////////
 
int charToIntWidth(char *lineOfHeightAndWidth) // Find the width from the line with both height and width
{
    char widthChar[10] = ""; // The width only
    char aNumber[10]= ""; // A char from the string in parameter
    int width; // The value which we will return
    int i; // counter
    int n = whereIsTheSpace(lineOfHeightAndWidth);
    for (i = 0; i < n; i++) // We will put the value of the main string in our variable until we will found a space
    {
        *aNumber = lineOfHeightAndWidth[i];
        strcat(widthChar, aNumber); // We concatenate our new variable with the number from the main string
        strcpy(aNumber, "");
    }
    width = atoi(widthChar);
    return width;
 
}
 
int charToIntHeight(char *lineOfHeightAndWidth)
{
    char heightChar[10] = "";
    char aNumber[10]= "";
    int n = whereIsTheSpace(lineOfHeightAndWidth);
    int i = n; // counter
    int height;
    while(lineOfHeightAndWidth[i]!='\n') // We stop to looking for the height when we met a '\n'
    {
        *aNumber = lineOfHeightAndWidth[i];
        strcat(heightChar, aNumber);
        i++;
 
    }
    height = atoi(heightChar);
    return height;
}
 
/////////////////////////////////////////////////////////////////////
//////////////////////////HEIGHTANDWIDTH/////////////////////////////
/////////////////////////////////////////////////////////////////////
 
char* heightAndWidth(Image *Im) // function which extract the Height and the width of a picture
{
    int i;
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
        printf("ligne 200:%s\n",Im->Itab);
    char* valueOfHeightAndWidth = malloc(21*sizeof(char));
    for (i = 1 ; i < 3 ; i++) // counter
    {
        fgets(valueOfHeightAndWidth, 21, file); // we select only the second line of the file
    }
    fclose(file);
    return valueOfHeightAndWidth;
}
 
int** matrixByColumnToMatrixP3(int width, int height, int saturation,Image *Im)
{
    int i = 0;
    int j = 0;
    int seuil = ((saturation + 1) / 2);
    char pixel[10];
    FILE *file = NULL;
    FILE* newFile = NULL;
    file = fopen(Im->Itab,"r");
        printf("ligne 221:%s\n",Im->Itab);
    newFile = fopen(Im->Otab, "w");
        printf("ligne 223:%s\n",Im->Otab);
    fputs( "P1\n", newFile);
    fprintf(newFile, "%d %d\n", width,height);
    int **q = (int **)malloc(sizeof(int*) * height);
    for ( i = 0; i < 3; i++)
    {
        fgets(pixel,  10, file);
    }
    for ( i = 0; i < height; i++)
    {
        q[i] = (int*) malloc(sizeof(int) * (width * 3));
        for ( j = 0; j < (width * 3); j++)
        {
            q[i][j] = atoi(fgets(pixel, 10, file));
        }
    }
    return q;
}
 
int** transformArrayOfCharInMatrixP3(int width, int height, int stringMax,Image *Im)
{
    int i = 0;
    int j = 0;
    int k = 0;
    FILE *file = NULL;
    file = fopen(Im->Itab,"r");
            printf("ligne 251:%s\n",Im->Itab);
    char lineOfPixel[stringMax];
    int *line;
    int **p = (int **)malloc(sizeof(int*) * height);
    for(i = 0; i < 3; i++)
    {
        fgets(lineOfPixel, stringMax , file);
    }
    for (i = 0; i < height ; i++)
    {
        p[i] = (int*) malloc(sizeof(int) *(width * 3));
        fgets(lineOfPixel, stringMax , file);
        line = explode(lineOfPixel, ' ', width * 3);
        for (j = 0; j < (width * 3) ; j++)
        {
            p[i][j] = line[j];
        }
        free(line);
    }
    return p;
}
 
int* explode(char* stringToExplode, char separator, int width)
{
    int i = 0;
    int *finalArray = malloc(sizeof(int) * width);
    int indicator = 0; // If several separators follow each other
    int buffer = 0;
    int cursor = 0;
    int length = strlen(stringToExplode);
    for (i = 0;i < length;i++)
    {
        if ( stringToExplode[i] == separator && indicator == -1)
            {
                finalArray[cursor] = buffer;
                cursor++;
                indicator = 0;
                buffer =  0;
            }
        else if ( stringToExplode[i] != separator && stringToExplode[i] != '\n')
            {
                buffer = buffer * 10 + (stringToExplode[i] - 48);
                indicator = -1;
            }
    }
    finalArray[cursor] = buffer;  // Because the last value is not register
    return finalArray;
}
 
/////////////////////////////////////////////////////////////////////
////////////////////////////COOUNTLINE///////////////////////////////
/////////////////////////////////////////////////////////////////////
 
 
// This function counts the number of lines in the file
// It needs only the name of the file which you want to extract its number of line
 
 
int countlines(Image *Im)
{
  FILE *file = NULL;
  file = fopen(Im->Itab,"r");
          printf("ligne 313:%s\n",Im->Itab);
 
  int ch=0;
  int lines=0;
 
  if (file == NULL)  // If the file is unreachable we will return 1
    return 1;
    while(!feof(file)) //each time we will meet a '\n' we will increase the number of lines
    {
        ch = fgetc(file);
        if(ch == '\n') // if we meet a '\n'
        {
        lines++;
    }
    }
    fclose(file);
    return lines;
}

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/*********Prototypes*******************/
/*************************************/
/*
int maxint(int first, int second);
int minint(int first, int second);
 
char* magicNumber(char *nameOfFile);
int arrondi(float number);
*/int countlines(Image *Im);/*
int getTheMaxSizeOfAString(char *nameOfFile);
*/char* heightAndWidth(Image *Im);
int whereIsTheSpace(char *lineOfHeightAndWidth);
int charToIntWidth(char *lineOfHeightAndWidth);
int charToIntHeight(char *lineOfHeightAndWidth);
 
int saturation(Image *Im);
int* explode(char* stringToExplode, char separator, int width);
//int getFormOfMatrix( int width, int height,Image *Im);/*
 
int** matrixByColumnToMatrixP1( char* nameOfFile, int width, int height, int saturation);
int** matrixByColumnToMatrixP2( char* nameOfFile, int width, int height, int saturation,char* nameOfOutputFile);
int** matrixByColumnToMatrixP3(int width, int height, int saturation,Image *Im);/*
 
int** transformArrayOfCharInMatrixP1( char* nameOfFile, int width, int height, int stringMax);
int** transformArrayOfCharInMatrixP2( char* nameOfFile, int width, int height, int stringMax);
*/int** transformArrayOfCharInMatrixP3(int width, int height, int stringMax,Image *Im);/*
 
int** binarisation(int width, int height, int saturation, char* nameOfFile, int max,int temp,char* nameOfOutputFile);
 
//void fileCopyP1 (char* nameOfFile,int max);
//void fileCopyP2 (char* nameOfFile, int max);
//void fileCopyP3 (char* nameOfFile, int max);
 
void writeFileWithBinarisation(int width, int height, int saturation,char* nameOfFile, int max,char* nameOfOutputFile,int temp);
*/
void writeFileWithGrayScale(int width, int height, int saturation, Image *Im,int max);
int** grayScale(int width, int height, int saturation, int max,Image *Im);
 
//int max(int* table, int saturation);
/*
void histogram(int width, int height, int sat,char* nameOfFile, int stringMax,char* nameOfOutputFile);
 
int** getKernel(char* kernel);
 
void convolution(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfYourOutputFile);
void convolutionP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfYourOutputFile);
 
void dilatation(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
void dilatationP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
 
void erosion(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
void erosionP3(int width, int height, char* nameOfFile, char* kernel, int sat, int max,char* nameOfOutputFile);
*/

Utilisation des structures

C

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