fileerr.c

C源码集

#include <stdio.h>

int main ()
{
	FILE* in;

	if((in = fopen("test.dat", "r")) == NULL)
	{
		fprintf(stderr, "open of file failed ");
		perror("because"); 		 //or just perror(" ");
		return 1;   				 // failed - return anything between 1 and 255
	}

	return 0;						 // success - return 0
}