Develop a C program to check whether the given string is palindrome or not


using string functions

#include <stdio.h>
#include <string.h>
int main()
char inputArray[100], reversedArray[100];
printf("Enter the string for palindrome check \n");
scanf("%s", inputArray);
/* Copy input string and reverse it*/
strcpy(reversedArray, inputArray);
/* reverse string */
/* Compare reversed string with inpit string */
if(strcmp(inputArray, reversedArray) == 0 )
printf("%s is a palindrome.\n", inputArray);
printf("%s is not a palindrome.\n", inputArray);
return 0;

without using string functions

#include <stdio.h>
#include <string.h>
int main(){
char inputString[100];
int leftIndex, rightIndex, length = 0;
printf("Enter a string for palindrome check\n");
scanf("%s", inputString);
/* Find length of input string */
while(inputString[length] != '\0')
/* If length of string is less than 1, ERROR */
if(length < 1)
return 1;
/* Initialize leftIndex and rightIndex to first and
last character of input string */
leftIndex = 0;
rightIndex = length -1;
/* Compare left and right characters, If equal then
continue otherwise not a palindrome */
while(leftIndex < rightIndex){
if(inputString[leftIndex] != inputString[rightIndex]){
printf("%s is not a Palindrome \n", inputString);
return 0;
printf("%s is a Palindrome \n", inputString);
return 0;