us hesabi

#include "stdafx.h"
int powx(int x, int y); // calculates x^y

int _tmain(int argc, _TCHAR* argv[])
{
    int test = powx(5, 3); // would return 25
    return 0;
}

int powx(int x, int y) // calculates x^y
{
    int base=x, res=1;
    while(y)
    {
        if(y&1)
        res *= base;
        y>>=1;
        base *= base;
    }
    return res;
}