RECURSION-5:NUMBER OF DIGITS

• Problem Description

  
  Write a program to find the number of digits in a number using recursion.
  
  
  Input and Output Format:
  
  Input consists of a nonnegative integer.
  
  Refer sample input and output for formatting specifications.
  
  All text in bold corresponds to input and the rest corresponds to output.

• CODING ARENA::

• #include <stdio.h>

  int main()

  {

    int a,b,count=0;

    scanf("%d",&a);

    b=a;

    while(a)

    {

      count++;

      a=a/10;

    }

    printf("The number of digits in %d is %d",b,count);

  
  

  return 0;

  }

• Test Case 1

  
  Input (stdin)

  123
  
  

  Expected Output

  The number of digits in 123 is 3

• Test Case 2

  
  Input (stdin)

  9
  
  

  Expected Output

  The number of digits in 9 is 1