问题：
[单选题]在C++中,若定义一个函数的返回值类型为void,以下叙述正确的是 ( )
A、函数返回值需要强制类型转换
B、函数不执行任何操作
C、函数本身没有返回值
D、函数不能修改实际参数的值
参考答案：
C
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