Question

*Has to be coded in c using Dev c++. Must use printf and scanf statements*

1. A 5 digit positive integer is entered through the keyboard. Write a recursive function to
calculate the sum of the digits of the number entered. (50 points - 10pts for commenting
and 40pts for successful execution)

Answer 1

#include <stdio.h>

/* Function declaration */
int digitsSum(int value);

/* Main Body */
int main()
{
int number, sum;
  
printf("Enter any number to find its sum of digits: ");
scanf("%d", &number);
  
sum = digitsSum(number); /*Function Calling*/
  
printf("Sum of digits of %d = %d", number, sum); /*Displaying output*/
  
return 0;
}

/**
* Recursive function to find sum of digits of a number */
int digitsSum(int num)
{
// Condition to check finite number value
if(num == 0)
return 0;
  
   return ((num % 10) + digitsSum(num / 10)); /*returns integer value to the function return parameter sum*/
}

Output: