C program to check a string is palindrome or not; Through this tutorial, we will learn how to check a string is a palindrome or not using for loop and functions in c programs.
Programs and Algorithm To Check A String Is Palindrome Or Not in C
- Algorithm to Check a Strng is palindrom or Not
- C Program To Check A String Is Palindrome Or Not using For Loop
- C Program To Check A String Is Palindrome Or Not using Function
Algorithm to Check a Strng is palindrom or Not
Use the following algorithm to write to check a whether a given string is palindrome or not; as follows:
- Start Program
- Take a string as input and store it in the array.
- Reverse the string and store it in another array using for loop or function.
- Compare both the arrays.
- Print result
- End Program
C Program To Check A String Is Palindrome Or Not using For Loop
#include <stdio.h>
#include <string.h>
int main()
{
char s[1000];
int i,n,c=0;
printf("Enter the string : ");
gets(s);
n=strlen(s);
for(i=0;i<n/2;i++)
{
if(s[i]==s[n-i-1])
c++;
}
if(c==i)
printf("string is palindrome");
else
printf("string is not palindrome");
return 0;
}
The Output of the above c program; as follows:
Enter the string : hello string is not palindrome
C Program To Check A String Is Palindrome Or Not using Function
#include <stdio.h>
#include <string.h>
int checkpalindrome(char *s)
{
int i,c=0,n;
n=strlen(s);
for(i=0;i<n/2;i++)
{
if(s[i]==s[n-i-1])
c++;
}
if(c==i)
return 1;
else
return 0;
}
int main()
{
char s[1000];
printf("Enter the string: ");
gets(s);
if(checkpalindrome(s))
printf("string is palindrome");
else
printf("string is not palindrome");
}
The Output of the above c program; as follows:
Enter the string: madam string is palindrome
