[C++知识库]C++从0到1(3)：运算符

运算符：

1. 算术运算符：

两个整数相除结果仍是整数（小数部分去掉）
除数为0会报错

#include<iostream>
using namespace std;

int main()
{
	//1、前置递增，先加1再运算
	//2、后置递增，先运算后加1
	int b = 10;
	int c = ++b * 10;
	cout << b << endl;//11
	cout << c << endl;//110

	int d = 10;
	int e = d++ * 10;
	cout << d << endl;//11
	cout << e << endl;//100
	system("pause");
	return 0;
}

2. 赋值运算符

#include<iostream>
using namespace std;

int main()
{
	// =
	int a = 10;
	cout << "a=" << a<<endl;
	// +=
	a += 2;
	cout << "a=" << a << endl;
	// -=
	a -= 2;
	cout << "a=" << a << endl;
	// *=
	a *= 2;
	cout << "a=" << a << endl;
	// /=
	a /= 2;
	cout << "a=" << a << endl;
	// %=
	a %= 2;
	cout << "a=" << a << endl;

	system("pause");
	return 0;
}

3. 比较运算符

4. 逻辑运算符