C++ program  Reverse a Number using Array :

C++ Programs:

Source Code:

#include<iostream>

/*  iostream provides basic

input and output services for C++ programs */ 

using namespace std;

int main()

// Th execution of program start with the main function

{ // arr is array

int num, rem, arr[10], i=0, tot=0;

//Variable Declarations specify the type followed by the name

//Initialization is the process of assign the value to a variable     

cout<<"Enter the Number: ";

// cout is used to display the same statement in the output.    

cin>>num;

// cin is used to enter the value by the user.    

while(num!=0)

/*The while loop is used to repeat a 

section of code an unknown number of

times until a specific condition is met*/      

    {

    rem = num%10;

    arr[i] = rem;

    num = num/10;

    i++;

    tot++;

    }

    cout<<"\nReverse Number = ";

/* A "For" Loop is used to repeat a specific

 block of code a known number of times*/   

    for(i=0; i<tot; i++)

        cout<<arr[i];

    cout<<endl;

    return 0;

}