C＃開關語法錯誤

Question

我有這個switch語句來測試我的接地整型變量的情況，但我的Unity-Monodevelop說我在我的代碼中有奇怪的語法錯誤，我找不到。我希望有人能告訴我它有什麼問題。

private void JumpController() { 
    if (Input.GetAxis("Jump")) { // if jump switch to action 
     switch (Grounded) { 
     0: // On ground; 
      Jump(); 
      Grounded = 1; 
      break; 
     1: // Jumped once; 
      Jump(); 
      Grounded = 2; 
      break; 
     2: // Jumped twice; 
      Debug.print ("Grounded = 2"); 
      break; 
     default: break; 
     } 
    } 
} 

An Image showing the errors

Answer 1

我會建議將您的案件之前case。這應該修復錯誤：

private void JumpController() { 
    if (Input.GetAxis("Jump")) { // if jump switch to action 
     switch (Grounded) { 
     case 0: // On ground; 
      Jump(); 
      Grounded = 1; 
      break; 
     case 1: // Jumped once; 
      Jump(); 
      Grounded = 2; 
      break; 
     case 2: // Jumped twice; 
      Debug.print ("Grounded = 2"); 
      break; 
     default: break; 
     } 
    } 
} 

Answer 2

您需要爲每種情況定義case關鍵字。例如： -

switch (Grounded) { 
    case 0 : 
    // something 
    break; 

} 

https://msdn.microsoft.com/en-gb/library/06tc147t.aspx