C++ Program to test whether a number is palindrome or not.

A number is called palindrome, if it reads the same on reading from both left and right. Thus, 121 is a palindrome, but 123 is not. Because, on reading from the right, it is 321 and not 123.

The steps followed are,

• get the number to be checked.
• reverse the number.
• compare with the given number.
• conclude.

The program would be as follows.

The Program

/palindrome 25/08/2013

#include<conio.h>

#include<iostream.h>

class dom

{

int dgt,dum;

int flag;

public:

void get()

{

clrscr();

cout<<"enter the digit:";

cin>>dgt;

dum=dgt;

flag=0;

}

void check();

void disp()

{

if (flag==1) cout<<endl<<"palindrome";

else cout<<endl<<"not palindrome";

}

};

void dom::check()

{

flag=0;

int sum=0,w;

while (dum!=0)

{

w=dum%10;

sum=sum*10+w;

dum=dum/10;

}

cout<<"reversed:"<<sum;

if (sum==dgt)

flag=1;

};

void main()

{

clrscr();

dom obj;

obj.get();

obj.check();

obj.disp();

//***vaju**

getch();

}