//C Program to calculate the power of a Number using
//Recursion
#include <stdio.h>

int power(int a,int b)
{
    if(b==0)
        return 1;

    return power(a,b-1) * a;
}

int main()
{
    int a=4,b=5;

    int ans=power(a,b);

    printf("%d",ans);
    return 0;
}