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.
<source lang="cpp">#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; }</source>