Someone

void openfile(void) {	printf("Test\n");	FILE *fp = NULL;	fp = fopen("grundlov_low8k.wav", "r");	if (fp) {		// done something		printf("File opened\n");	        int const result = fclose(fp);                if (result != 0) {                       printf("Error closing file. (%d)", errno");                }	} else {                printf("Error opening file. (%d)", errno");	}}