error catcher tested

23 hours ago · fbe1411c61
parent 6b21689423
commit fbe1411c61
1 changed files with 6 additions and 0 deletions
--- a/main.c
+++ b/main.c
@ -6,6 +6,12 @@ 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);