Cpp-learning/运算符/5、逻辑运算符.cpp

#include <iostream>

int main()
{

	//逻辑运算符  非  ！
	//int a = 10;      // 在C++中，除了0 都为真
	//std::cout << !a << std::endl;
	//std::cout << !!a << std::endl;
	// 真变假   假变真

	//逻辑运算符  与  &&  两个条件都为真  结果才为真
	//int a = 10;
	//int b = 10;
	//std::cout << (a && b) << std::endl;

	//a = 0;
	//b = 10;
	//std::cout << (a && b) << std::endl;

	//a = 0;
	//b = 0;
	//std::cout << (a && b) << std::endl;

	//同真为真，其余为假

	//逻辑运算符  或  ||  
	int a = 10;
	int b = 10;
	std::cout << (a || b) << std::endl;

	a = 0;
	b = 10;
	std::cout << (a || b) << std::endl;

	a = 0;
	b = 0;
	std::cout << (a || b) << std::endl;
	//同假为假，其余为真

	system("pause");

	return 0;

}