To check whether the number is palindrome or not

Question:

Write a program to check whether the given number is palindrome or not.

Logic:

• Get the input number from the user.
• Then reverse the given number using any algorithm.
• And compare the given number with reversed number.
• Print the output as palindrome or not.

Algorithm:

1. Get the input value from the user.
2. Find the last digit of the number.
3. Then reverse the number using some calculation.
4. Removes the last digit by dividing the number with 10.
5. Repeat step 2 to 4 until it ends.
6. Then print the valid output.

Program:

#include<stdio.h>
#include<math.h>
void main()
{
	int a,r,sum=0,b;
	clrscr();
	printf("enter the number:");
	scanf("%d",&a);
	b=a;
	while(a>0)                     //reverse the number
	{
		r=a%10;                    //finds the last digit
		sum=r+sum*10;              //reversing number
		a=a/10;                    //removes the last digit
	}
	if(b==sum)                     //compare the given number with reversed number
	{
		printf("Given number is palindrome:");
	}
	else
	{
		printf("Given number is not palindrome:");
	}
	getch();
}

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