Lista 10 - Exercício 3

#include <stdio.h>
#include <stdlib.h>
#define FILENAME "testx.c"

int main(){
    int i = 0,j, counter = 0;
    char s[50][100];

    FILE *fp;

    fp = fopen(FILENAME,"r");

    while (fgets(s[i],100,fp) != NULL)
        i++;

    fclose(fp);

    fp = fopen(FILENAME,"w");

    for(j = 0; j < i; j++)
        fprintf(fp,"/* %d */   %s",counter++,s[j]);

    fclose(fp);

    return 0;
}