在C++中,bool函数的返回值类型是bool #include<iostream> bool isEven(int number) { return (number % 2 == 0); } int main() { int num = 5; if (isEven(num)) { std::cout<< num << " is even."<< std::endl; } else { std::cout<< num << " is not even."<< std::endl; }...