10.02.2011

Check String Palindrome

Q. What is palindrome?
Ans:Palindrome is a Greek word which is divided in two or three word as (palin=Again + drome/deamein=Run). So A palindrome is word or phrase which reads the same in both direction i.e. left to right and right to left are character must be same. Example of string palindrome as follows : 
1. POP
2. MALAYYALAM
3. LEVEL
4. LIVE EVIL
5. MADAM, I'M MADAM

/*c program to compare two string and find out whether a string is palindrome or not*/
/*simple c program to check whether a string is palindrome or not*/
#include<stdio.h>
#include<conio.h>
int main()
{
 char str[20];
 int i,j;
 printf("Enter string : ");
 gets(str);
 for(i=0; str[i]!=NULL; i++);
 for(i--,j=0; j<=i; )
 {
   if(str[i]==str[j])
   {
      i--;
      j++;
   }
   else
      break;
 }
 if(j>i)
    printf("\nString is palindrome!!");
 else
    printf("\nString is not palindrome!!");
 getch();
 return 0;
}


/****************Output**************** 
Enter string :navana
String is not palindrome



Enter string : madam n madam
String is palindrome

***************************************/

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