作业2.3

#include<iostream>

#include<cmath>

using namespace std;

int sroot(int i)

{return sqrt(i);

}

long sroot(long j)

{return sqrt(j);

}

double sroot(double k)

{return sqrt(k);

}

int main()

{
int i=16;
long j=1600;
double k=0.16;

cout<<i<<'的二次方根是：'<<sroot(i)<<endl;

cout<<j<<'的二次方根是：'<<sroot(j)<<endl;

cout<<k<<'的二次方根是：'<<sroot(k)<<endl;

return 0;

}