Write a c program to check the given number is palindrome or not

A number is called as the palindrome number if the number is equal after reverse the number. For Example : 58485 is a palindrome number.

// Write a c program to check the given number is palindrome or not.
    #include<stdio.h>
    int reverseNumber(int n){
        int reverse = 0;
        while(n > 0){
            int last_digit = n % 10;
            reverse = reverse * 10 + last_digit;
            n = n / 10;
        }
        return reverse;
    } 
    int main(){
        int n;
        printf("Enter the number : ");
        scanf("%d", &n);
        if(n == reverseNumber(n)){
            printf("Palindrome");
        }else{
            printf("Not a palindrome");
        }
        return 0;
    }

#include<stdio.h>

It is include the standard library for using the inbuild function of the input/output function.

// Function to reverse the number.
    int reverseNumber(int n){
        int reverse = 0;
        while(n > 0){
            int last_digit = n % 10;
            reverse = reverse * 10 + last_digit;
            n = n / 10;
        }
        return reverse;
    }

Above the reverse function is calculate the reverse of a given number, using the while loop that execute the loop body n > 0, after calculated the reverse then return the value of reverse number. For more info Read now.

// main function
    int main(){
        int n;
        printf("Enter the number : ");
        scanf("%d", &n);
        if(n == reverseNumber(n)){
            printf("Palindrome");
        }else{
            printf("Not a palindrome");
        }
        return 0;
    }

In the main function, declared the variable n as integer. Read the value from the user and store in the n variable. Check the given number and reverse number is both are equal then output is “palindrome” otherwise number is “not a palindrome” using the printf() function and check the condition using if-else statement.

Algorithm

1. Start
2. Read value from the user
3. Reverse the number given by the user
4. Compare the actual number and reverse number
5. if (n == reverse)
       print “palindrome”
6. else
       print “not a palindrome”
7. End

Pseudocode

// pseudocode of palindrome number
    1. INCLUDE stdio.h
    2. FUNCTION reverseNumber(n)
        1. SET int reverse = 0;
        2. while n > 0 then
            1. int last_digit = n % 10
            2. reverse = reverse * 10 + last_digit
            3. n = n / 10
            3. RETURN reverse
    3. FUNCTION main()
        1. DECLARE n AS INTEGER
        2. PRINT "Enter the number : "
        3. READ n FROM USER
        4. IF n == reverseNumber(n)
            PRINT "Palindrome"
        5. ELSE
            PRINT "Not a palindrome"
        6. RETURN 0;