C program to Demonstrate the Recursive function.

Write a C program to demonstrate the recursive function.
Recursion  is the programming technique that a process invoking itself again and again. In this program, We reverse the given number and checks it is a palindrome or not. Read more about C Programming Language .

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#include<stdio.h>
#include<conio.h>

int main(){
clrscr();
int num,num1,rev;
printf("nEnter a number :n");
scanf("%d",&num);
num1=num;
//call recursive function
rev=reverse(num);

printf("nAfter reverse the number is :n%d",rev);
if(num1==rev){
printf("nnNumber %d is Palindromen",num1);
}else
{
printf("nnNumber %d is NOT a Palindromen",num1);
}

return 0;
}
int sum=0,r;
reverse(int num){
if(num){
r=num%10;
sum=sum*10+r;
reverse(num/10);
}
else
return sum;
return sum;
}

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C program to check whether a given 5 digit number is palindrome or not

Check for Palindromic number. C program to check whether a given 5 digit number is palindrome or not.

Problem Statement

Write a C program to check if a given 5 digit number is palindrome or not. Take input from the user, check if the given number is a palindromic number and display appropriate message in the end.

A number is said to be a palindromic number if it remains same when reversed. For example 12321 is a palindromic number, where as 12345 is not. You can read more about Palindromic number.

Solution

The program takes input number from the user. Then the digits of the given number are reversed. Reversed number is compared with the original number to check if they are equal. If they are equal, the original number is a palindrome. If they are not equal, then the number is not a palindrome.

The Program

/* C program to check whether a given 5 digit number is palindrome or not
* (c) www.c-program-example.com
*/
#include<stdio.h>
int main() {
int num, rem, i, rev = 0, num1, count = 0;
printf("Enter a five digit number:\n");
scanf("%d", &num);
num1 = num;
// reverse the given number
while(num > 0) {
rem = num % 10;
rev = rem + rev * 10;
num = num / 10;
count++;
}
if(count == 5) {
if(num1 == rev) { // if it's palindrome, reverse & original number will be same
printf("The Given Number %d is Palindrome", num1);
} else {
printf("The Given Number %d is NOT Palindrome",num1);
}
} else {
printf("The given %d number is not a five digit number!",num1);
}
return 0;
}
view raw palindrome.c hosted with ❤ by GitHub

Sample Output

Palindrome number or not

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C Program to check whether a given 5 digit number is palindrome or not

C program to check whether a given 5 digit number is palindrome or not. Palindromic number is a number that remains same, when it is reversed or can be read in the same way in either direction.
Example:12321, 23132… Read more about C Programming Language .

Read more Similar C Programs
Learn C Programming

Number System

You can easily select the code by double clicking on the code area above.

To get regular updates on new C programs, you can Follow @c_program

You can discuss these programs on our Facebook Page. Start a discussion right now,

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(c) www.c-program-example.com