C program to find a Prime number or not

To find given number is prime number or not

A number is said to be a prime number if the number is divisible by 1 and itself only.
If the given number is a prime them output should be 'the given number is prime' .If not the output should be The given number is not a prime number.

INPUT: 5

OUTPUT: The given number is a prime number

INPUT: 4

OUTPUT: The given number is not a prime number

Program:

#include<stdio.h>

#include<conio.h>

int main()

{

int n, i, c = 0;

clrscr();

printf("\n Enter a number: ");

scanf("%d ", &n);

i=1;

do

  {

    if(n % i = 0)

    c ++;

  }while(i <= n)

   (c == 2)?printf("\nThe given number is prime") : printf("\nThe given number is not prime");

return 0;

}

Output:

Enter a number : 5 The given number is prime