Write a C program using user-defined functions to determine whether the given string is palindrome or not

In this article, we will write a C program using user-defined functions to determine whether the given string is palindrome or not.

Palindrome means the string on reversal should be the same as the original.

Example: madam on reversal is also madam

Algorithm: 

Step 1: start 

Step 2: read a string A 

Step 3: copy string A into B 

Step 4: reverse string B 

Step 5: compare A &B If A equals B to got step 6 Else goto step 7 

Step 6:print given string A is palindrome Step 7:print g

Write a C program using user-defined functions to determine whether the given string is palindrome or not

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

void main()
{
	char string[25], reverse_string[25] = { '\0' };
	int i, length = 0, flag = 0;

	printf("Enter a string \n");
	gets(string);
	for (i = 0; string[i] != '\0'; i++)
	{
		length++;
	}
	printf("The length of the string '%s' = %d\n", string, length);
	for (i = length - 1; i >= 0; i--)
	{
		reverse_string[length - i - 1] = string[i];
	}
	for (flag = 1, i = 0; i < length; i++)
	{
		if (reverse_string[i] != string[i])
			flag = 0;
	}
	if (flag == 1)
		printf("%s is a palindrome \n", string);
	else
		printf("%s is not a palindrome \n", string);
}

Input:

Enter a string
 madam

Output:

The length of the string 'madam' = 5
madam is a palindrome 

Related C Programs with Output

1. Write a C Program to Find the Sum and Average of Three Numbers
2. Write a C Program to Find the Sum of Individual Digits of Positive Integer
3. Write a C Program to Generate the First N Terms of the Sequence
4. Write a C Program to Generate All Prime Numbers Between 1 and N
5. Write a C Program to Check Whether Given Number Is Armstrong Number or Not
6. Write a C program to evaluate algebraic expression (ax+b)/(ax-b)
7. Write a C program to check whether a given number is a perfect number or Not
8. Write a C program to check whether a number is strong number or not
9. Write a C program to find the roots of a quadratic equation
10. Write a C program to find the factorial of a given integer using a non-recursive function
11. Write a C program to find the factorial of a given integer using a recursive function
12. Write a C program to find the GCD of two given integers by using the recursive function
13. Write a C program to find the GCD of two given integers using a non-recursive function
14. Write a C program to find both the largest and smallest number in a list of integers
15. Write a C Program to Sort the Array in an Ascending Order
16. Write a C Program to find whether the given matrix is symmetric or not
17. Write a C program to perform the addition of two matrices
18. Write a C Program That Uses Functions to Perform Multiplication Of Two Matrices
19. Write a C program to use a function to insert a sub-string in to a given main string from a given position
20. To delete n Characters from a given position in a given string
21. Write a C program using user-defined functions to determine whether the given string is palindrome or not
22. Write a C program to count the number of lines, words, and characters in a given text
23. Write a C program to find the length of the string using Pointer
24. Write a C program to Display array elements using calloc( ) function
25. Write a C Program to Calculate Total and Percentage Marks of a Student Using Structure
26. Write a C Program to Display the Contents of a File
27. Write a C program to copy the contents of one file to another

Free Spring Boot Tutorial - 5 Hours Full Course

---

Watch this course on YouTube at Spring Boot Tutorial | Fee 5 Hours Full Course