C Program to Find Total Number of Digit in a Given Number

In this tutorial you will learn about the C Program to Find Total Number of Digit in a Given Number and its application with practical example.

C Program to Find Total Number of Digit in a Given Number.

In this tutorial, we will learn to create a C program that will Find the Total Number of digits in a Given Number in C programming.

Table Of Contents−

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following C programming topics:

Operators in C Programming.

Basic Input and Output function in C Programming.
Basic C programming.
While loop in c programming.

Finding Total Number of Digits in a Given Number.

As we all know the c programming is a very powerful language. In the c programming language, we have many pre-defined functions for arithmetic operations. but today we will count the number of digits in a number with the help of a while loop.

With the help of this program, we can Find the Total Number of digits in a Given Number.

Algorithm:-

1. Declare the variables for the program.
 
2. Take the input number from the user.
 
3. Pass that number to a while loop.
 
4. Calculate the size of number.
 
5. Print the size of that number.
 
6. End the program.

1. Declare the variables for the program.

2. Take the input number from the user.

3. Pass that number to a while loop.

4. Calculate the size of number.

5. Print the size of that number.

6. End the program.

Program to Find Total Number of Digits in a Given Number:-

#include <stdio.h>  
int main()  
{   // variable declaration for the proogram
   int no; 
   int flag=0;   
   //display message to Take input number from the user
   printf("Enter a number");  
   //scanning the input number and storing it to a variable
   scanf("%d",&no);  
   //while loop to get the number of digits in a number
   while(no!=0)  
   {  
       no=no/10;  
       flag++;  
   }  
   //printing the output for the program
   printf("\nThe number of digits in an integer is : %d",flag);  
    return 0;  
}

#include <stdio.h>

int main()

{ // variable declaration for the proogram

int no;

int flag=0;

//display message to Take input number from the user

printf("Enter a number");

//scanning the input number and storing it to a variable

scanf("%d",&no);

//while loop to get the number of digits in a number

while(no!=0)

{

no=no/10;

flag++;

}

//printing the output for the program

printf("\nThe number of digits in an integer is : %d",flag);

return 0;

}

Output:-

In the above program, we have first initialized the required variable.

flag= it will hold the integer value for numbers.
no = it will hold the integer value of number input.

Display message to Take input number from the user.

Scanning the input number and storing it to a variable.

While loop to get the number of digits in a number.

Printing output of the program.

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