Example of checking palindrome and prime number

Here in this post we represent two basic C programming examples. Those example are only for the beginners.

v  Check whether a number is palindrome or not through C program.

v  Check whether a number is prime or not through C program.

Now the answers are given below:

Answer of no 1:

A number is said to be palindrome if the reverse of that number is same as the original number. Coding is given below…

/* C program to check whether a number is palindrome or not */

#include<stdio.h>

#include<stdlib.h>

int main()

{

   int n,t,rev=0;

  printf("Give the value of of the number\n");

  scanf("%d",&n);

  t=n;

  while(t!=0)

  {

    rev=rev*10;

    rev=rev+t%10;

   t=t/10;

 }

if(rev!=n)

printf("the entered number is not a palindrome\n");

else

printf("the entered number is palindrome number\n\n");                          

}

Answer of no 2:

A number is said to be prime if that number is only divisible by 1 and the number itself. Coding is given below…

/* C program to check whether a number is prime or not*/

#include<stdio.h>
int main()

{

int a,c=0,i,num;

printf("Give the value of num\n");

scanf("%d",&num);

for(i=1;i<=num;i++)

{

a=num%i;

if(a==0)

{

c=c+1;

}

}

if(c==2)

printf("num is prime number");

else

printf("num is not a prime number");




}