C++ Program to Check Number is Palindrome

Write a C++ Program to Check Number is Palindrome with an example. Any number can be palindrome if the reverse of that number equal to the actual number. For instance, 121 is a palindrome because when you reverse it, you get the same number. 

In this C++ palindrome number example, we assigned the actual value to temp. Next, we revered that temp value. Finally, we used the If condition to check whether the number equal to reverse and print the palindrome.

#include<iostream>

using namespace std;

int main()
{
	int number, temp, reminder, reverse = 0;
	
	cout << "Please Enter the Number to Check Palindrome or Not =  ";
	cin >> number;
	
	temp = number;
	
	while (temp > 0)
	{
    	reminder = temp % 10;
    	reverse = reverse * 10 + reminder;
    	temp = temp / 10;
	}
	cout << "\nReverse of given Number = " << reverse << "\n\n";
	
	if(number == reverse) {
		cout << number << " is a Palindrome Number";
	}	
	else {
		cout << number << " is Not a Palindrome Number";
	}
 	return 0;
}

Let me check with the palindrome number. I suggest you refer to the Reverse a Number article.

Please Enter the Number to Check Palindrome or Not =  191

Reverse of given Number = 191

191 is a Palindrome Number

C++ Program to Check Number is Palindrome using For Loop

#include<iostream>

using namespace std;

int main()
{
	int number, temp, reminder, reverse = 0;
	
	cout << "Please Enter the Number to Check Palindrome or Not =  ";
	cin >> number;
	
	for(temp = number; temp > 0; temp = temp / 10)
	{
    	reminder = temp % 10;
    	reverse = reverse * 10 + reminder;    	
	}
	cout << "\nReverse of given Number = " << reverse << "\n\n";
	
	if(number == reverse) {
		cout << number << " is a Palindrome Number";
	}	
	else {
		cout << number << " is Not a Palindrome Number";
	}
 	return 0;
}

Output

Please Enter the Number to Check Palindrome or Not =  1331

Reverse of given Number = 1331

1331 is a Palindrome Number

C++ program to find Palindrome number using Functions

#include<iostream>

using namespace std;

int reverseNumbers(int number)
{
	int reminder, reverse = 0;
	
	for(; number > 0; number = number / 10)
	{
    	reminder = number % 10;
    	reverse = reverse * 10 + reminder;    	
	}
	return reverse;
}
int main()
{
	int number, reverse = 0;
	
	cout << "Please Enter the Number to Check Palindrome or Not =  ";
	cin >> number;
	
	reverse = reverseNumbers(number);
	cout << "\nReverse of given Number = " << reverse << "\n\n";
	
	if(number == reverse) {
		cout << number << " is a Palindrome Number";
	}	
	else {
		cout << number << " is Not a Palindrome Number";
	}
 	return 0;
}

Output

Please Enter the Number to Check Palindrome or Not =  191

Reverse of given Number = 191

191 is a Palindrome Number

C++ Program to find Number is Palindrome using Recursion

In this C++ code, int reverseNumbers(int number) method reverse the given number. Here, reverseNumbers(number / 10) line recursively calls the int reverseNumbers(int number) method with updated value.

#include<iostream>

using namespace std;

int reverseNumbers(int number)
{
	static int reminder, reverse = 0;
	
	if(number > 0)
	{
    	reminder = number % 10;
    	reverse = reverse * 10 + reminder;
    	reverseNumbers(number / 10);
    	return reverse;
	}
	else
		return 0;
	
}
int main()
{
	int number, reverse = 0;
	
	cout << "Please Enter the Number to Check Palindrome or Not =  ";
	cin >> number;
	
	reverse = reverseNumbers(number);
	cout << "\nReverse of given Number = " << reverse << "\n\n";
	
	if(number == reverse) {
		cout << number << " is a Palindrome Number";
	}	
	else {
		cout << number << " is Not a Palindrome Number";
	}
 	return 0;
}

Output

Please Enter the Number to Check Palindrome or Not =  4554

Reverse of given Number = 4554

4554 is a Palindrome Number

C++ Program to Print Palindrome Numbers from 1 to 100

This C++ palindrome number example allows the user to enter the minimum and maximum values. Next, it prints the palindrome numbers between min and max values.

#include<iostream>
using namespace std;

int main()
{
	int minimum, maximum, number, temp, reminder, reverse;
	
	cout << "\nPlease Enter the Minimum Value =  ";
	cin >> minimum;
	
	cout << "\nPlease Enter the Maximum Value =  ";
	cin >> maximum;
	
	cout << "\nPalindrome Numbers between " << minimum << " and " << maximum << " = ";
	for(number = minimum; number <= maximum; number++ )
	{
		temp = number;
		reverse = 0;
		
		while (temp > 0)
		{
			reminder = temp % 10;
			reverse = reverse * 10 + reminder;
			temp = temp / 10;
		}
		if(number == reverse) {
			cout << number << "  ";
		}
	}
 	return 0;
}

Output

Please Enter the Minimum Value =  100

Please Enter the Maximum Value =  1000

Palindrome Numbers between 100 and 1000 = 101  111  121  131  141  151  161  171  181  191  202  212  222  232  242  252  262  272  282  292  303  313  323  333  343  353  363  373  383  393  404  414  424  434  444  454  464  474  484  494  505  515  525  535  545  555  565  575  585  595  606  616  626  636  646  656  666  676  686  696  707  717  727  737  747  757  767  777  787  797  808  818  828  838  848  858  868  878  888  898  909  919  929  939  949  959  969  979  989  999