Matlab嵌套switch語句

可以將一個switch作為外部switch語句序列的一部分。即使內部和外部switch的case常數包含公共值，也不會產生任何衝突。

語法

嵌套switch語句的語法如下 -

switch(ch1)
   case 'A'
   fprintf('This A is part of outer switch');
      switch(ch2)
         case 'A'
         fprintf('This A is part of inner switch' );

         case 'B'
         fprintf('This B is part of inner switch' );
      end
   case 'B'
   fprintf('This B is part of outer switch' );
end

例子

創建腳本檔並在其中鍵入以下代碼 -

a = 100;
b = 200;
switch(a)
   case 100
   fprintf('This is part of outer switch %d\n', a );
   switch(b)
      case 200
      fprintf('This is part of inner switch %d\n', a );
   end
end
fprintf('Exact value of a is : %d\n', a );
fprintf('Exact value of b is : %d\n', b );

執行上面示例代碼，得到以下結果 -

This is part of outer switch 100
This is part of inner switch 100
Exact value of a is : 100
Exact value of b is : 200