A palindrome is a phrase that reads the same backward as forward, ignoring whitespace and punctuation. For example, “Madam, I’m Adam” and “Are we not drawn onward, we few? Drawn onward to new era?” are palindromes. Write a program that will determine whether a string entered from the keyboard is a palindrome.

 A palindrome is a phrase that reads the same backward as forward, ignoring whitespace and punctuation. For example, “Madam, I’m Adam” and “Are we not drawn onward, we few? Drawn onward to new era?” are palindromes. Write a program that will determine whether a string entered from the keyboard is a palindrome.

#include<stdio.h>

#include<string.h>

#include<ctype.h>

int main()

{

char sentence[1000];

char sentence_chars[1000];

int j=0,length=0,i;

printf("Enter a sentence ");

gets(sentence);

for(i=0; i<strlen(sentence); i++)

if(isalpha(sentence[i]))

sentence_chars[j++]=tolower(sentence[i]);

sentence_chars[j]='\0';

length=strlen(sentence_chars);

for(i=0; i<length/2; i++)

if(sentence_chars[i]!=sentence_chars[length-1-i])

break;

if(i==length/2)

printf("palindrome");

else

printf("not palindrome");

}