Program to check whether the given number is palindrome or not.

//Palindrome

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int num,rev=0,rem,i;

cout<<"ENTER A NUMBER:";

cin>>num;

for(i=num;i>0;i=i/10)

{

rem=i%10;

rev=rev*10+rem;

}

if(rev==num)

cout<<"NUMBER IS PALINDROME";

else

cout<<"NUMBER IS NOT A PALINDROME";

getch();

}

9.      Program to find sum of natural numbers up to 100.

// Sum of natural numbers

#include<iostream.h>

#include<conio.h>

void main()

{

clrscr();

int sum=0,i;

for (i=0;i<=100;i++)

sum=sum+i;

cout<<"Sum of Natural Numbers up to100="<<sum;

getch();

}