//sqrt, pow
#include <iostream>
#include <cstdlib>
#include <cmath>
using namespace std;

int main(int argc, char *argv[])
{
    double x=7.568;
    cout<<"square root->"<<sqrt(x)<<",  x^2->"<<pow(x,2)<<endl;
    system("Pause");
    return 0;
}