C programming, Compute the exponentiation of a number using a recursive method.

#include <stdio.h>

int power(int n1, int n2);

int main() {

    int base, a, result;

    printf("Enter base number: ");

    scanf("%d", &base);

    printf("Enter power number(positive integer): ");

    scanf("%d", &a);

    result = power(base, a);

    printf("%d^%d = %d", base, a, result);

    return 0;

}

int power(int base, int a) {

    if (a != 0)

        return (base * power(base, a - 1));

    else

        return 1;

}