C/stdio.h/feof
feof: determines whether the end of the file has been reached
//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);
}