EOF en langage C

#include <stdio.h>

int main(){
  unsigned int n=0;
  FILE *fp=fopen("plop.txt");
  while(fgetc(fp)!=EOF){
    ++n;
  }
  printf("n=%d\n",n);
  fclose(fp);
  return 0;
}

FILE *fp=fopen("plop.txt");

FILE *fp=fopen("plop.txt","r");

#include <stdio.h>

int main(){
  unsigned int n=0;
  const char *filename="plop.txt";
  FILE *fp=fopen(filename,"r");

  if(!fp){
    fprintf(stderr,"can't open %s\n",filename);
    return 1;
  }

  while(fgetc(fp)!=EOF) ++n;
  printf("n=%d\n",n);
  fclose(fp);
  return 0;
}

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