C Program to Calculate Generic Root of a Number

How to Write a C Program to Calculate Generic Root of a Number with an example?. The mathematical formula to calculate the generic root is nothing but the calculating sum of all digits in a given number until we get a single-digit output (less than 10). For example, Generic Root of 98765 = 9 + 8 + 7 + 6 + 5 = 35 = 8

C Program to Calculate Generic Root of a Number

This C program allows the user to enter one positive integer. And then, it will calculate the Generic Root of a given number

/* C Program to Calculate Generic Root of a Number */
 
#include <stdio.h>
 
int main()
{
  int Number, Sum, Reminder;
 
  printf("\n Please Enter any number\n");
  scanf("%d", &Number);
 
  while(Number >= 10)
  {
    for (Sum=0; Number > 0; Number= Number/10)
    {
      Reminder = Number % 10;
      Sum=Sum + Reminder;  
    }
    if(Sum >= 10)
    {
      Number = Sum;
    }
    else
    {
      printf("\n The Generic Root of a Given Number = %d", Sum);
      return 0;
    }
  } 
}

C Program to Calculate Generic Root of a Number using Functions

It is the same C program that we used in the first example, but this time we separated the logic using Functions in C.

/* C Program to Calculate Generic Root of a Number */
 
#include <stdio.h>
 
int Sum_Of_Digits (int); 
 
int main()
{
  int Number, Sum, Root;
 
  printf("\n Please Enter any number\n");
  scanf("%d", &Number);
  
  while(Number >= 10)
  {
    Sum = Sum_Of_Digits (Number);
    if(Sum >= 10)
    {
      Number = Sum;
    }
    else
    {
      printf("\n Generic Root of a Given Number = %d", Sum);
      return 0;
    }
  }	
}
 
int Sum_Of_Digits (int Number)
{
  int Reminder, Sum;
 
  for (Sum=0; Number > 0; Number = Number/10)
  {
     Reminder = Number % 10;
     Sum = Sum + Reminder;  
  }     
 return Sum;
}

We used a function called Sum_of_Digits to find the Sum of all digits of a Number. I suggest you refer C Program to find the Sum of Digits in a Number article in C Programming to understand the function.

C Generic roots output

 Please Enter any number
9875625

 Generic Root of a Given Number = 6

Within this Program to Calculate Generic Root of a Number example,

• First, Condition inside the C While loop will make sure that the given number is greater than or equal to 10. And if the condition is True, then it will call the Sum_of_Digits.
• Next, Condition inside the If Statement will make check whether the Sum_of_Digits Function Output (i.e., Sum) is greater than or equal to 10.
  • If the condition is True, we are assigning Sum to Number. It means, it will again call the Sum_of_Digits with updated Number (i.e., Sum).
  • If the condition is False, Print the Output.

Also Read

• C Program to Find the Gross Salary of an Employee
• C Program to Print the Last Digit of Number