C Program to Count Number of Digits in Given Number - Learn With AVRK

Program to Count the Number of digits in C

Now, we'll observe a way to count the amount of digits in an integer. This integer is nothing but the quantity entered by the user.

We will calculate count the quantity of digits using while loop.

Approach

• Firstly, the quantity are going to be entered by the user. Suppose we declare the variable 'num' and stores the integer value within the 'num' variable.
• Now we are going to create ages loop and given a condition that condition is 'num' isn't up to zero.
• Suppose the worth of 'num' is 123.
• When the primary iteration executes, the worth of 'num' are going to be 123, and also the value of count are going to be incremented to 1.
• When the second iteration executes, the worth of 'num' are 12, and also the value of count are incremented to 2.
• When the third iteration executes, the worth of 'num' are 1, and therefore the value of count are incremented to three.
• After the completion of the third iteration, the worth of 'num' becomes 0, and loop is terminated because it doesn't satisfy the condition (n!=0)

Program:

Output: