C Program

Write a program to calculate sum of n numbers using recursion.

#include <stdio.h>

void main() {

int n, add;

printf("Enter number : ");

scanf("%d", &n);

add = sum(n);

printf("%d", add); 

}

int sum(n) {

if(n == 1) {

return 1;

}

else {

return n + sum(n-1);

}

}

Output :