# Using iterative function print the given number in reverse order in C language

CServer Side ProgrammingProgramming

## Problem

How to print the given in reverse order with the help of iterative function i.e., while loop using C programming language?

## Solution

So far, we had seen how to reverse the string using string function and without string function, now let’s see how to reverse a number without using predefined function −

## Algorithm

Input − give a number at runtime

Step 1: Declare the variable number,reverse
Step 2: Initialize reverse= 0
Step 3: while number>0
(a) reverse=reverse*10 + number%10;
reverse = reverse*10 + num%10;
(b) Divide number by 10
Step 4: return reverse

## Example

Live Demo

#include <stdio.h>
int reverse(int number){
int reverse = 0;
while(number > 0){
reverse = reverse*10 + number%10;
number = number/10;
}
return reverse;
}
int main(){
int number;
printf("enter a number:");
scanf("%d",&number);
printf("Reverse of no. is %d", reverse(number));
getchar();
return 0;
}

## Output

enter a number:356789
Reverse of no. is 987653