实验一.1

#include<iostream>
using namespace std;
int sum(int a,int b){return a+b;}
double sum(double n,double m){return n+m;}
int aver(int a,int b){return a*b;}
double aver(double n,double m){return n*m;}
int main()
{
int a,b;
double n,m;
cout<<"enter a and b: "<<endl;
cin>>a>>b;
cout<<"enter n and m: "<<endl;
cin>>n>>m;
cout<<sum(a,b)<<endl;
cout<<aver(a,b)<<endl;

cout<<sum(n,m)<<endl;
cout<<aver(a,b)<<endl;

return 0;
}