Discussion :

[smalto]

voici mes instructions:Instructions

1. Read the contents of file "p2data.txt" into a linked list which for now I
will refer to as link1.
2. Traverse link1 and copy the contents of link1 into a new linked list which I will call link2.
3. Traverse link1 and while traversing write the content to a text file call "link12out.txt" .
4. Write 3 blank lines to the file "link12out.txt" .
5. Traverse link2 and while traversing write the contents to the text file "link12out.txt"
6. (NOTE) The content of the input file "p2data.txt" has the same format as the files that we have been using in class, i.e. a first name, last name, rank, and a grade.


j`ai ajoute les pieces jointe des fichiers original et celui a ecrire a l`interieure.et comme vous le constaterai link12out.txt est mon resultat final ce qui n`est pas le resultat recherche.p2data.txt ..est parcontre le fichier original dans lequel on recupere les infos


voici mon code

Code :

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#include <stdio.h>
#include <stdlib.h>
 
struct stud_info
{
char fname[15];
char lname[15];
int rank ;
float grade;
struct stud_info* next;
};
 
int main ()
	{
	struct stud_info* newnode;
    struct stud_info* link1;
	struct stud_info* link2;
	struct stud_info* read;
 
 
		FILE * infile ;
		FILE* outfile;
		infile= fopen ( "p2data.txt", "r");
		outfile= fopen("link12out.txt","w");
 
		newnode = (struct stud_info*)  malloc(sizeof(struct stud_info));
		newnode->next = NULL;
		link1 = newnode;
 
		fscanf(infile,"%s %s %d %f",newnode->fname,newnode->lname,&newnode->rank,&newnode->rank);
 
		//built link1
		while(!feof(infile))
		{
			newnode = (struct stud_info*) malloc(sizeof(struct stud_info));
			newnode->next = link1;
			link1 = newnode;
		    fscanf(infile,"%s %s %d %f",newnode->fname,newnode->lname,&newnode->rank,&newnode->grade);
		}
		read = link1;
 
        //built link2
        	newnode = (struct stud_info*) malloc(sizeof(struct stud_info));
		    newnode->next = NULL;
		    link2 = newnode;			
		while(read != NULL)
		{
			newnode= (struct stud_info*) malloc(sizeof(struct stud_info));
			newnode->next = link2;
			link2 = newnode;
			newnode = read;
 
			printf("%s %s %d %f\n",link2->fname,link2->lname,link2->rank,link2->grade);
 
			read = read->next;
		}
 
		//print link1 in file
		while(link1 != NULL)
		{
			fprintf(outfile,"%-20s %-20s %-4d %-8.2f\n", link1->fname,link1->lname,link1->rank,link1->grade);
			link1=link1->next;
 
		}
 
		while(link2 != NULL)
		{
			fprintf(outfile,"\n\n\n %-20s %-20s %-4d %-8.2f\n",link2->fname,link2->lname,link2->rank,link2->grade);
 
			link2 = link2->next;
		}
 
		fclose(infile);
		fclose(outfile);
 
return(0);
 
}//end of fonction main

mon probleme survient serieusement a partir de la list2(link2) qd je dois tranferer le contenu de la liste1(link1) vers la liste2, je n`y arrive pas et j`ai des resultats bizare....aidez moi....

....SMALTO...