pc-ip-05.c

Metadata

• Author — Amit Dutta
• Last updated — 05 Jan 2026
• License — MIT License (See the LICENSE file for details)

Problem Statement

Problem Statement

Question 5: Write a function to check whether a given string is a palindrome. Use this function to determine whether an entered string is Palindrome.

Source Code

View on GitHub Download Raw

Printing the code

To print this file, open it on GitHub and click Raw before printing, or use the Download Raw button above and print directly from that page.

#include <stdio.h>

int isPalindrome(char[]);

int main()
{
    char str[51];
    printf("Please enter the string (Max: 50 character): ");
    gets(str);
    if (isPalindrome(str))
    {
        printf("\nInput string is a palindrome string.");
    }
    else
    {
        printf("\ninput string is not a palindrome string.");
    }
    return 0;
}

int isPalindrome(char str[])
{
    int low = 0;
    int high = 0;
    while (str[high] != '\0')
    {
        high++;
    }
    high--;
    if (low == high)
    {
        return 1;
    }
    while (low < high)
    {
        if (str[low] != str[high])
        {
            return 0;
        }
        low++;
        high--;
    }
    return 1;
}