第二章作业2.30

# include <iostream>

using namespace std;

int sroot(int x)

{
return x*x;}

long sroot(long y)

{

    return y*y;}

double sroot(double z)

{
return z*z;}

int main()

{
int x=2;
long y=1628;
double z=3.14;
cout<<x<<"*"<<x<<"="<<sroot(x)<<endl;

    cout<<y<<"*"<<y<<"="<<sroot(y)<<endl;

    cout<<z<<"*"<<z<<"="<<sroot(z)<<endl;
return 0;

}