C Program to check number is a palindrome or not using pointers


In this program, You will learn how to check number is a palindrome or not using pointers in C.


Some list is : 11 22 33 121 131


Example: How to check number is a palindrome or not using pointers in C

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#include<stdio.h>

int main() {

    int n, num1, r, rev = 0;
    int *num;

    printf("Enter a number : ");
    scanf("%d", &n);

    num1 = n;
    num = &n;

    while (*num > 0) {
        r = *num % 10;
        rev = rev * 10 + r;
        *num = *num / 10;
    }

    if (rev == num1) {
        printf("\nNumber is palindrome : %d", num1);
    } else {
        printf("\nNumber is not palindrome : %d", num1);
    }

    return 0;
}

Output:

Enter a number : 121
Number is palindrome : 121