Check the prime Number

Here's a basic description of how to use C programming to determine whether a given integer is prime:

#include <stdio.h>
#include<conio.h>
void main(){
       int a, i,p=0;
       printf("Enter a Positive integer:");
       scanf("%d",&a);
       for (i = 1; i <= a; i++) {
              if (a % i == 0) {
               p++;
            }
         }
      if (c == 2) {
        printf("n is a Prime number");
          }
        else {
               printf("n is not a Prime number");
          }
       }

output:-

Enter any number n: 5

n is Prime