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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 |
