C++ program to reverse a number using loops

Karmehavannan

5 years ago

C++ program to reverse a number using loops

In this article, we will discuss the concept of the C++ program to reverse a number using loops

In this post, we are going to learn how to find reverse number of the given number in C++ programming language

C++ program to reverse a number using loops — Reversed number

Cpp code to reverse a number using for loop

Program 1

The program allows the user to enter a number and it displays the reverse pattern of the given number using for loop in C++ language

when you are entered 56789,
The output will be displayed as 98765 using the program

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int number,reversed_num=0;
    cout << "Enter a number for find reverse" << endl;

    cin>>number; //Taking a number as an input and stores number variable
    cout << "you entered: "<<number;
    for(; number!=0;){
        reversed_num=reversed_num*10;
       reversed_num=reversed_num+number%10;
       number=number/10;//updating statements
    }
    cout << "\nReversed number is: "<<reversed_num;
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Explanation

Declare and initialize two variables as follows int number,reversed_Num=0;
The user is asked to enter a number and it is stored in the integer variable of ‘number‘
The for loop is used to find the reversed number of the given number
The for loop is functioning until ‘ number‘ is not equal to zero
Finally, the output is displayed as the reversed number

Cpp code to reverse a number using while loop

Program 2

The program allows the user to enter a number and it displays the reverse pattern of the given number using while loop in C++ language

when you are entered 234567,
The output will be displayed as 765432 using the program

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int number,reversed_num=0;
    cout << "Enter a number for find reverse" << endl;

    cin>>number; //Taking a number as an input and stores number variable
    cout << "you entered: "<<number;
    while(number!=0){
        reversed_num=reversed_num*10;
       reversed_num=reversed_num+number%10;
       number=number/10;
    }
    cout << "\nReversed number is: "<<reversed_num;
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Explanation

Declare and initialize two variables as follows int number,reversed_Num=0;
The user is asked to enter a number and it is stored in the integer variable of ‘number‘
The while loop is used to find the reversed number of the given number
The while loop is functioning until ‘ number‘ is not equal to zero
Finally, the output is displayed as the reversed number

Cpp code to reverse a number using do-while loop

Program 3

The program allows the user to enter a number and it displays the reverse pattern of the given number using do-while loop in C++ language

when you are entered 654321,
The output will be displayed as 123456 using the program

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int number,reversed_num=0;
    cout << "Enter a number for find reverse" << endl;

    cin>>number; //Taking a number as an input and stores number variable
    cout << "you entered: "<<number;
    do{
        reversed_num=reversed_num*10;
       reversed_num=reversed_num+number%10;
       number=number/10;
    }while(number!=0);
    cout << "\nReversed number is: "<<reversed_num;
    getch();
    return 0;
}

When the above code is executed, it produces the following result

Explanation

Declare and initialize two variables as int number,reversed_Num=0;
The user is asked to enter a number and it is stored in the integer variable of ‘number‘
The do-while loop is used to find the reversed number of the given number
The do-while loop is functioning until ‘ number‘ is not equal to zero
Finally, the output is displayed as the reversed number

C++ program to reverse a number using loops