In subroutine main: Expected statement(do, let, while, return or if)

[riverfish]

Hey guys,

Just started getting my hands dirty with the Jack language and in the midst of writing the Main.main() function, I received an error when I tried to compile:

Compiling /Users/Joseph/workspace/mooc/nand2tetris/projects/09/TicTacToe
In Main.jack (line 7): In subroutine main: Expected statement(do, let, while, return or if)


I can't really pinpoint what's causing the error here, but line 7 corresponds to var char key. My current code is:

class Main {
  function void main() {
    do Output.moveCursor(11, 21);
    do Output.printString("Press Space To Begin");
    do Output.println();

    var char key;
    var boolean start;
    let start = false;

    while (~start) {
      while (key = 0) {
        let key = Keyboard.keyPressed();
      }

      if (key = 64) { let start = true; } // spacebar
    }
    return;
  }
}


I can't see any reason why I'm getting this error. Maybe my eyes are going crazy (as is usually the case when it comes to debugging). What could be the cause here?

[cadet1620]

"var" statements are only allowed at the beginning of subroutines.

  function void main() {
    var char key;
    var boolean start;

    do Output.moveCursor(11, 21);
    do Output.printString("Press Space To Begin");
    do Output.println();

    let start = false;

[riverfish]

I knew I was doing something wrong like that. Thanks for clearing that up :)