Prime Number in C language

Prime Number is a whole number greater than 1 whose only factors are 1 and itself. A factor is a whole numbers that can be divided evenly into another number.

the example of prime number is 2,3,5,7,11,13,17,19 and so on.

now we will make a code in C to determine is it prime number or not

#include<stdio.h>

int main()

{

   int num,n,check;

   scanf("%d",&num);

   check=0;

   for(n=1;n<=num;n++)

   {

      if(num%n==0)check++;

   }

   if(check==2)printf("%d is Prime Number",num);

   else printf("%d is Not Prime Number",num);

   return 0;

}

in some competitive coding you will get time limit if you use this code

many ways to make this coding

That is all from me

thank you