C/stdio.h/feof

feof: determines whether the end of the file has been reached

<source lang="cpp"> //Declaration: int feof(FILE *stream); //Return: A nonzero value: if the file pointer is at the end of the file.

               zero: otherwise.  

 #include <stdio.h>
 #include <stdlib.h>
 int main(void){
    FILE *fp;
    if((fp=fopen("test", "rb"))==NULL) {
       printf("Cannot open file.\n");
       exit(1);
    }
    while(!feof(fp)) {
       char ch = getc(fp);
       printf("%c",ch);
    }
    fclose(fp);
 }

      </source>