Check SNT

//Kiem tra so nguyen to_By CQH
//Trinh Cong Quang_12520344

#include <stdio.h>
#include <math.h>
#include <conio.h>

void main()
    {
        int n, i,j=0;
        while(n<=0)
            {
                printf("Vui long nhap vao so nguyen duong can kiem tra\n\n");
                scanf("%d", &n);
            }
        if(n==1)
            printf("%d khong phai la so nguyen to\n",n);
        else
            for(i=2;i<=(int)sqrt(n);i++)
            if(n%i==0)
                {
                    j=1;
                    break;
                }
        if(j==1)
            printf("%d khong phai la so nguyen to\n\n",n);
        else
            printf("%d la so nguyen to\n\n",n);

        getch();
    }