PALINDROME

Code 1:

1. Wap to check a number is palindrome

2. C program to find whether a number is palindrome or not

#include<stdio.h>

int main(){

    int num,r,sum=0,temp;

    printf("Enter a number: ");

    scanf("%d",&num);

    temp=num;

    while(num){

         r=num%10;

         num=num/10;

         sum=sum*10+r;

    }

    if(temp==sum)

         printf("%d is a palindrome",temp);

    else

         printf("%d is not a palindrome",temp);

    return 0;

}

Sample output:

Enter a number: 131

131 is a palindrome

Code 2:

1. Write a c program for palindrome

2. C program to find palindrome of a number

3. Palindrome number in c language

#include<stdio.h>

int main(){

    int num,r,sum,temp;

    int min,max;

    printf("Enter the minimum range: ");

    scanf("%d",&min);

    printf("Enter the maximum range: ");

    scanf("%d",&max);

    printf("Palindrome numbers in given range are: ");

    for(num=min;num<=max;num++){

         temp=num;

         sum=0;

         while(temp){

             r=temp%10;

             temp=temp/10;

             sum=sum*10+r;

         }

         if(num==sum)

             printf("%d ",num);

    }

    return 0;

}

Sample output:

Enter the minimum range: 1

Enter the maximum range: 50

Palindrome numbers in given range are: 1 2 3 4 5 6 7 8 9 11 22 33 44

Code 3:

1. How to check if a number is a palindrome using for loop

#include<stdio.h>

int main(){

    int num,r,sum=0,temp;

    printf("Enter a number: ");

    scanf("%d",&num);

    for(temp=num;num!=0;num=num/10){

         r=num%10;

         sum=sum*10+r;

    }

    if(temp==sum)

         printf("%d is a palindrome",temp);

    else

         printf("%d is not a palindrome",temp);

    return 0;

}

Sample output:

Enter a number: 1221

1221 is a palindrome

Code 4:

1. C program to check if a number is palindrome using recursion

#include<stdio.h>

int checkPalindrome(int);

int main(){

    int num,sum;

    printf("Enter a number: ");

    scanf("%d",&num);

    sum = checkPalindrome(num);

    if(num==sum)

         printf("%d is a palindrome",num);

    else

    printf("%d is not a palindrome",num);

    return 0;

}

int checkPalindrome(int num){

    static int sum=0,r;

    if(num!=0){

         r=num%10;

         sum=sum*10+r;

         checkPalindrome(num/10);

    }

    return sum;

}

Sample output:

Enter a number: 25

25 is not a palindrome

Definition of Palindrome number or What is palindrome number?

A number is called palindrome number if it is remain same when its digits are reversed. For example 121 is palindrome number. When we will reverse its digit it will remain same number i.e. 121

Palindrome numbers examples: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 101, 111, 121, 131, 141, 151, 161, 171, 181, 191 etc.