Reverse a Number in C++

We can reverse a number in C++ using loop and arithmetic operators. In this program, we are getting number as input from the user and reversing that number.

Let’s see a simple C++ example to reverse a given number.

Solution 1:


#include<iostream>
#include<iostream>
using namespace std;
 
int main() {
int number, reverse = 0;
cout<<"Enter a Number to Reverse and press Enter: ";
cin>> number;     // Taking Input Number in variable number
 
   while( true )
   {
   	if(number==0){
   		break;
	   }
      reverse = reverse * 10;
      reverse = reverse + number%10;
      number = number/10;
   }
   cout<<"Reversed Number is:  "<< reverse;
   return 0;
 
}

#include<iostream>

using namespace std;

int main() {

int number, reverse = 0;

cout<<"Enter a Number to Reverse and press Enter: ";

cin>> number; // Taking Input Number in variable number

while( true )

{

if(number==0){

break;

}

reverse = reverse * 10;

reverse = reverse + number%10;

number = number/10;

}

cout<<"Reversed Number is: "<< reverse;

return 0;

}

Solution 2:


#include<iostream>
#include<iostream>

using namespace std;
 
int main() {
int number, reverse = 0;
cout<<"Enter a Number to Reverse and press Enter: ";
cin>> number;     // Taking Input Number in variable number
 
   for( ; number!= 0 ; )
   {
      reverse = reverse * 10;
      reverse = reverse + number%10;
      number = number/10;
   }
   cout<<"Reversed Number is:  "<< reverse;
   return 0;
 
}