C Tutorial/stdio.h/ferror
ferror
Item Value Header
- include <stdio.h>
Declaration int ferror(FILE *stream); Function checks for a file error. Return 0: no error has occurred. Nonzero: an error has occurred.
Use the perror() function to find out more about the error.
#include <stdio.h>
#include <stdlib.h>
int main(void){
FILE *fp;
if((fp=fopen("test", "rb"))==NULL) {
printf("Cannot open file.\n");
exit(1);
}
putc("C", fp);
if(ferror(fp)) {
printf("File Error\n");
exit(1);
}
fclose(fp);
return 0;
}