然后我要求3和2的和差商积，应该怎么做

#include<iostream>
#include<math.h>
using namespace std;
******
void main ()
{
    int m=3,n=2;
    cout<<"  和:"<<m<<"+"<<n<<"="<<pluse(m,n)<<endl;
    cout<<"  差:"<<m<<"-"<<n<<"="<<minuse(m,n)<<endl;
    cout<<"  积:"<<m<<"×"<<n<<"="<<times(m,n)<<endl;
    cout<<"  商:"<<m<<"÷"<<n<<"="<<(int)divide(m,n)<<endl;
}