Palindrome program in C++ Notes+Coding by Digitalise Data

 

Palindrome program in C++

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.

1. #include <iostream.h>
2. #include <conio.h>   
3. int main()  
4. {  
5.   int n,r,sum=0,temp;    
6.   cout<<"Enter the Number=";    
7.   cin>>n;    
8.  temp=n;    
9.  while(n>0)    
10. {    
11.  r=n%10;    
12.  sum=(sum*10)+r;    
13.  n=n/10;    
14. }    
15. if(temp==sum)    
16. cout<<"Number is Palindrome.";    
17. else    
18. cout<<"Number is not Palindrome.";   
19.   return 0;  
20. }  

Output:

Enter the Number=121   
 Number is Palindrome.	

Enter the number=113  
Number is not Palindrome.