Item Value
Header#include
Declarationint ferror(FILE *stream);
Functionchecks for a file error.
Return0: no error has occurred. Nonzero: an error has occurred.
Use the perror() function to find out more about the error.
#include
#include
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;
}