Q:

C program to count digits of a number using recursion

mahmoud2506
Save to bookmark
|
2022-05-03
|
  316 
0

C program to count digits of a number using recursion

In this C program, we are going to learn how to count total number of digits of a number using recursion?

Given an integer number and we have to count the digits using recursion using C program.

In this program, we are reading an integer number and counting the total digits, here countDigits() is a recursion function which is taking number as an argument and returning the count after recursion process.

Example:

    Input number: 123
    Output:
    Total digits are: 3
C programming, exam questions, C programming exam-questions,
login and add your own answer to this question

All Answers

mahmoud2506
2022-05-03
need an explanation for this answer? contact us directly to get an explanation for this answer

Program to count digits in C using recursion

/*C program to count digits using recursion.*/
 
#include <stdio.h>
 
//function to count digits
int countDigits(int num)
{
    static int count=0;
     
    if(num>0)
    {
        count++;
        countDigits(num/10);
    }
    else
    {
        return count;
    }
}
int main()
{
    int number;
    int count=0;
     
    printf("Enter a positive integer number: ");
    scanf("%d",&number);
     
    count=countDigits(number);
     
    printf("Total digits in number %d is: %d\n",number,count);
     
    return 0;
}

Output

Enter a positive integer number: 123
Total digits in number 123 is: 3

need an explanation for this answer? contact us directly to get an explanation for this answer

total answers (1)

C Programming Recursion Examples, Programs
This question belongs to these collections

Similar questions

need a help?

find thousands of online teachers now
C program to calculate sum of all digits using rec... >>
<< C program to calculate power of a number using rec...