sum of n natural numbers using recursion

#include <stdio.h>
int sum_of_numbers(int n);
int main()
{
    int limit;
    printf("Enter the limit : ");
    scanf("%d", &limit);
    printf("sum = %d", sum_of_numbers(limit));
    return 0;
}

int sum_of_numbers(int n) 
{
    if (n != 0)
        return n + sum_of_numbers(n - 1);
    else
        return n;
}