为什么当我调用这个函数时它不返回我的输入？它说它的回报支持，但它没有？

Question

#include <iostream>
// **Change needs_it_support so that it returns support:**
bool needs_it_support() {

bool support;

std::cout << "Hello. IT. Have you tried turning it off and on again? Enter 1 for yes, 0 for no.n";
std::cin >> support;
return support;
}
int main() {

// **Change the following line to print the function result:**
needs_it_support();  **calling function**

}

但什么都没有打印出来，我只按了1或0，我没有收到任何回复

Answer 1

您应该在从函数返回后打印结果，在这种情况下，您应该放这样的东西：

std::cout << needs_it_support() << std::endl;

或：

bool result  = needs_it_support();
std::cout << result << std::endl;