RECURSIVE FUNCTIONS

• Problem Description

  
  Write a C program for Sum of Natural Numbers Using Recursion.

• CODING ARENA

• #include <stdio.h>

  int addnum(int n);

  int main()

  {

    int num;

    scanf("%d",&num);

    printf("%d",addnum(num));

    return 0;

  }

  int addnum(int n)

  {

    if(n!=0)

      return n+addnum(n-1);

    else

      return n;

  }

  
  

• Test Case 1

  
  Input (stdin)

  2
  
  

  Expected Output

  3

• Test Case 2

  
  Input (stdin)

  3
  
  

  Expected Output

  6