C Program to add two number using recursion

#include<stdio.h>
int add(int m, int n){
    if(n == 0)
        return m;
    return add(m, n-1) + 1;
}
int main()
{
    int a, b, sum;
    printf("C Program to add two number using recursion \n");
    printf("Enter the first number:\n");
    scanf("%d", &a);
    printf("Enter the second number:\n");
    scanf("%d", &b);
    sum = add(a, b);
    printf("Sum of two numbers is: %d\n", sum);
    return 0;
}

Output

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