Power Of 2 By Recursion

#include<stdio.h>
int anik(int m)
{
    if(m == 0)
        return 1;
    else
        return 2*anik(m-1);
}
int main()
{
    int a, r;
    printf("Enter Power : ");
    scanf("%d", &a);
    r = anik(a);
    printf("2 to the power %d is : %d\n", a, r);

    return 0;
}