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#include <iostream>
#include<cmath>
#include<cstdlib>
using namespace std;

void f1(float x,float &x1,float &x2, float &x3)
{
    x1=abs(x);
    x2=sqrt(x);
    x3=pow(x,2);


}

int main()
{
    float x, x1, x2, x3;

    cout<<"Enter x \n";
    cin>>x;
    f1(x,x1,x2);
    cout<<"x1="<<x1<<endl;
    cout<<"x2="<<x2<<endl;
    cout<<"x3="<<x3<<endl;
    system("pause");



    return 0;
}