update C snipplets

code/C/thread.c

@@ -8,24 +8,24 @@
 int g = 0;
 
 void *my_thread(void *vargp) {
-    int *id = (int *)vargp;
+  int *id = (int *)vargp;
 
-    static int s = 0;
+  static int s = 0;
 
-    ++s;
-    ++g;
+  ++s;
+  ++g;
 
-    printf("Thread ID: %d, Static: %d, Global: %d\n", *id, ++s, ++g);
+  printf("Thread ID: %d, Static: %d, Global: %d\n", *id, ++s, ++g);
 }
 
 int main() {
-    pthread_t tid;
+  pthread_t tid;
 
-    int i;
-    for (i = 0; i < 3; i++)
+  int i;
+  for (i = 0; i < 3; i++)
     pthread_create(&tid, NULL, my_thread, (void *)&tid);
 
-    pthread_exit(NULL);
+  pthread_exit(NULL);
 
-    return 0;
+  return 0;
 }