c++万能计算器

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
    int a,b;
    cout<<"请输入两个数"<<endl;
    cout<<"第一个数是:";
    cin>>a;
    cout<<"第二个数是:";
    cin>>b;
    cout<<a<<"加"<<b<<"的结果是:"<<a+b<<endl;
    cout<<a<<"减"<<b<<"的结果是:"<<a-b<<endl;
    cout<<b<<"减"<<a<<"的结果是:"<<b-a<<endl;
    cout<<a<<"乘以"<<b<<"的结果是:"<<a*b<<endl;
    cout<<a<<"除以"<<b<<"的结果是:"<<1.0*a/b<<endl;
    cout<<a<<"除以"<<b<<"商是:"<<a/b<<"yssen余数是:"<<a%b<<endl;
    return 0;
}