- A.11
- B.40
- C.45
- D.70
正确答案及解析
正确答案
解析
传值与传引用的区别是：值传递时，实参被拷贝了一份，只能在函数体内使用。因此， a代表的其实就是 x 本身，只有a的变化才能导致main函数里面的x 值的变化。
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