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B.TECH I YEAR • I SEMESTER • R25

Programming for Problem Solving - Lab Manual

C Programming Laboratory • Program Solution

📘 R25 Regulation 🎓 I Year 📚 I Semester 💻 C Programming 🧪 Lab Program
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Write a C program to determine if the given string is a palindrome or not (Spelled same in both directions with or without a meaning like madam, civic, noon, abcba, etc.).

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Write a C program to determine if the given string is a palindrome or not (Spelled same in both directions with or without a meaning like madam, civic, noon, abcba, etc.).

C Program 
//to find the given string is a palindrome or not.
#include <stdio.h>
#include <string.h>

int main() {
    char str[20];
    int i,j;
    int flag = 0;
    
    printf("Enter a string: ");
    scanf("%s", str);
     // Calculate the string length, -1 for '\0' 
    j=strlen(str)-1;
    // Compare characters from the start and end of the string
    // and stop if a mismatch is found or the middle of the string is reached.
    for(i=0;i<=j;i++,j--)
    {
        if(str[i]!=str[j])
        {
            flag=1;
            break;
        }
    }
     if (flag) {
        printf("%s is not a palindrome\n", str);
    } else {
        printf("%s is a palindrome\n", str);
    }
}

OUTPUT-1
Enter a string: madam
madam is a palindrome
OUTPUT-2
Enter a string: abcdba
abcdba is not a palindrome

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Write a C program to determine if the given string is a palindrome or not (Spelled same in both directions with or without a meaning like madam, civic, noon, abcba, etc.).
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