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;}