对于A和B哪种类型，简单赋值语句A = B在C ++中合法但在Java中不合法? [英] For what types of A and B is the simple assignment statement A = B legal in C++ but not Java?

问题描述

在我的作业中回答了这个问题，尝试了谷歌搜索，但那里也没有运气.

Got this question in my homework, tried googling but no luck there either.

对于什么类型的A和B，简单赋值语句A = B在C ++中是合法的，但是不是Java?

For what types of A and B is the simple assignment statement A = B legal in C++ but not Java?

推荐答案

任何分配了 boolean 的东西都可以.在C ++中，true为任何非零值.在Java中， boolean 是一种类型(并检查了该类型).例如，

Anything with a boolean assignment should do. In C++, true is any non-zero value. In Java, boolean is a type (and that type is checked). For example,

bool a = 1;

是合法的C ++.但是

is legal C++. But

boolean a = 1;

不是合法的Java.此外，如

is not legal Java. Also, as noted by @akuzmiykh the reverse is also true, that is

int a = true;

是合法的C ++，但不是合法的Java.

is legal C++, but not legal Java.

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