Das geht in C so nicht, nur in C++:

C++
Code:
for (int i = 0; i < 4; i++)
  {
    Go (200, 150);
    Turn (90, 150);
  }
C
Code:
int i;
for (i = 0; i < 4; i++)
  {
    Go (200, 150);
    Turn (90, 150);
  }
http://www.it-academy.cc/article/1446/ANSI+C99+Grundlagen.html#1.9.4.Die%20for-Schleife|outline