C++整数相除、取模运算和自加

#include<iostream>
using  namespace std;

int main()
{
    int num1 = 30;
    int num2 = 4;

    cout << num1 / num2 << endl;  //整数除以整数结果还是整数，小数点之后的都去掉

    int a1 = 20;
    int a2 = 3;
    cout << a1 % a2 << endl;     //取模运算的本质是求余数

    int b1 = 10;
    int b2 = 3;
    int b3 = b1++ +10;       //b1++先计算表达式，再进行变量自加
    int b4 = ++b2 + 10;     //b2++先进行变量自加，再计算表达式
    cout << b3 << endl;
    cout << b1 << endl;
    cout << b4 << endl;
    cout << b2 << endl;
     
    system("pause");

    return 0;
}