error catcher tested

main.c

@@ -6,6 +6,10 @@ int main (int argc, char *argv[]){
 	int fd; 
 	// export 
 	fd = open("/sys/class/gpio/chip0/export", O_WRONLY);
+	if (fd < 0){
+		perror("Error opening the GPIO export path");
+		return -1;
+	}
 	write(fd,"17", 2);
 	close(fd);
 	
@@ -32,9 +36,6 @@ int main (int argc, char *argv[]){
 	close(fd);
 	
 
-
-
-
 	printf("Hello from Raspberry Pi!\n");
 	printf("Number of arguments: %d\n",argc);
 	printf("Program is reciving: %s\n",argv[0]);