Program for To determine if the given string is a palindrome or not

//If the reverse of a string is equal to original string then it is called palindrome


#include<stdio.h>
#include<string.h>

enum Boolean{false,true};
enum Boolean IsPalindrome(char string[])
{
Int left, right,len=strlen(string);
Enum Boolean matched=true;
 if(len==0)

return 0; left=0; right=len-1;

/* Compare the first and last letter,second & second last & so on */
 while(left<right&&matched)
{
if(string[left]!=string[right])
  matched=false; else

{
left++;
right--;

}
  }
return matched;
}

int main()
{
char string[40]; clrscr();

printf("****Program to test if the given string is a palindrome****\n");
printf("Enter a string:");
scanf("%s",string);
if(IsPalindrome(string))
printf("The given string %s is a  palindrome\n",string);
  else
printf("The given string %s is not a palindrome\n",string); getch();
return 0;
}

Output:


1. Enter the string:malayalam
The given string malayalam is a palindrome
2. Enter the string:india
The given string india is not a palindrome

Conclusion:

The program is error free

VIVA QUESTIONS:

1) What is meant by palindrome ?
Ans: If the reverse of a string/number is equal to original string/ number then it is called palindrome.

2) What is the use of gets() function ?
Ans: To read the string at a time

3) What is the use of puts() function ? Ans: To write the string at a time

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