这篇文章给大家分享的是C++中运算符的内容，C++中运算符有 算术运算符、赋值运算符、比较运算符和逻辑运算符，下文将介绍它们的作用和用法，对大家学习C++有一定的帮助，文中介绍的非常详细，感兴趣的朋友接下来一起跟随小编看看吧。

运算符

    作用：用于执行代码的运算

01 算术运算符

#include<iostream>
using namespace std;
int main1()
{
	//加减乘除
	int a1 = 10;
	int b1 = 3;
	cout << a1 + b1 << endl;
	cout << a1 - b1 << endl;
	cout << a1 * b1 << endl;
	cout << a1 / b1 << endl; //两个整数相除，结果依然是整数，将小数部分去除
	int a2 = 10;
	int b2 = 20;
	cout << a2 / b2 << endl;
	int a3 = 10;
	int b3 = 0;
	//cout << a3 / b3 << endl; //错误，除数不可以为0
	double x1 = 0.5;
	double x2 = 0.22;
	cout << x1 / x2 << endl;
	//取模
	int c1 = 10;
	int d1 = 3;
	cout << c1 % d1 << endl;
	int c2 = 10;
	int d2 = 20;
	cout << c2 % d2 << endl;
	int c3 = 10;
	int d3 = 0;
	//cout << c3 % d3 << endl; //错误，取模除数不可以为0
	double x3 = 3.14;
	double x4 = 1.1;
	//cout << x3 % x4 << endl; //错误，不支持小数取模运算
	//1.前置递增
	int m = 10;
	++m;
	cout << "m = " << m << endl;
	//2.后置递增
	int n = 10;
	n++;
	cout << "n = " << n << endl;
	//3.前置和后置的区别
	//前置递增：先让变量+1，后进行表达式运算
	int m2 = 10;
	int n2 = ++m2 * 10;
	cout << "m2 = " << m2 << endl;
	cout << "n2 = " << n2 << endl;
	//后置递增：先进行表达式运算，后让变量+1
	int m3 = 10;
	int n3 = m3++ * 10;
	cout << "m3 = " << m3 << endl;
	cout << "n3 = " << n3 << endl;
	system("pause");
	return 0;
}

02 赋值运算符

#include<iostream>
using namespace std;
int main2()
{
	//赋值运算符
	int a = 10;
	cout << "a = " << a << endl; //10
	// +=
	a += 2;
	cout << "a = " << a << endl; //12
	// -=
	a = 10;
	a -= 2;
	cout << "a = " << a << endl; //8
	// *=
	a = 10;
	a *= 2;
	cout << "a = " << a << endl; //20
	// /=
	a = 10;
	a /= 2;
	cout << "a = " << a << endl; //5
	// %=
	a = 10;
	a %= 2;
	cout << "a = " << a << endl; //0
	system("pause");
	return 0;
}

03 比较运算符

    运算符术语示例结果==相等于4==30!=不等于4!=31<小于4<30>大于4>31<=小于等于4<=30>=大于等于4>=31

#include<iostream>
using namespace std;
int main3()
{
	//比较运算符
	// ==
	int a = 10;
	int b = 20;
	cout << (a == b) << endl;
	// !=
	cout << (a != b) << endl;
	// >
	cout << (a > b) << endl;
	// <
	cout << (a < b) << endl;
	// >=
	cout << (a >= b) << endl;
	// <=
	cout << (a <= b) << endl;
	system("pause");
	return 0;
}

04 逻辑运算符

    运算符术语示例结果!非!a如果a为假，则!a为真；如果a为真，则!a为假。&&与a&&b如果a和b都为真，则结果为真，否则为假。||或a||b如果a或b有一个为真，则结果为真；二者都为假时，结果为假。

#include<iostream>
using namespace std;
int main4()
{
	//逻辑运算符 非 !
	int a = 10;
	cout << !a << endl; //0
	cout << !!a << endl; //1
	//逻辑运算符 与 &&
	int c = 10;
	int d = 10;
	cout << (c && d) << endl; // 1
	c = 0;
	d = 10;
	cout << (c && d) << endl; // 0
	c = 10;
	d = 0;
	cout << (c && d) << endl; // 0
	c = 0;
	d = 0;
	cout << (c && d) << endl; // 0
	//逻辑运算符 或 ||
	int e = 10;
	int f = 10;
	cout << (e || f) << endl; // 1
	e = 0;
	f = 10;
	cout << (e || f) << endl; // 1
	e = 10;
	f = 0;
	cout << (e || f) << endl; // 1
	e = 0;
	f = 0;
	cout << (e || f) << endl; // 0
	system("pause");
	return 0;
}

总结

    关于C++中运算符的内容就介绍到这，上述示例具有一定的借鉴价值，感兴趣的朋友可以参考，希望能对大家有帮助，想要了解更多C++中运算符的内容的内容，大家可以关注其它的相关文章。

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