Palindrome number algorithm

A palindrome number is a number that is same after reverse. For example 121, 34543, 343, 131, 48984 are the palindrome numbers.

Palindrome number algorithm

• Get the number from user
• Hold the number in temporary variable
• Reverse the number
• Compare the temporary number with reversed number
• If both numbers are same, print palindrome number
• Else print not palindrome number

Let's see the palindrome program in C++. In this program, we will get an input from the user and check whether number is palindrome or not.

---

#include <iostream>   
using  namespace  std;  
int  main()  
{  
   int  n,r,sum=0,temp;    
  cout<< "Enter the Number=" ;    
  cin>>n;    
 temp=n;    
  while (n>0)    
{    
 r=n%10;    
 sum=(sum*10)+r;    
 n=n/10;    
}    
if (temp==sum)    
cout<< "Number is Palindrome." ;    
else     
cout<< "Number is not Palindrome." ;   
   return  0;  
} 

Output:

Enter the Number=121   
 Number is Palindrome. 

Enter the number=113  
Number is not Palindrome.