c program for prime number between 1 to n

For beginners
{I am going write the c program but before you need a c compiler(software).there are a lot of compilers(software) for windows 7  like Code::Blocks,dev c++ . Download dev c++ its free and install it in your computer.open  dev c++ go to file-->new-->source file.}  

#include <stdio.h>

#include <conio.h>

int main (void)

{

int p, d,n;

_Bool isPrime;

printf("enter a number(you will get all prime numbers upto that number)\n");

scanf("%d",&n);

for ( p = 2; p <= n; ++p ) 

{

isPrime = 1;

for ( d = 2; d < p; ++d )

if ( p % d == 0 )

isPrime = 0;

if ( isPrime != 0 )

printf ("%i ", p);

}

printf ("\n");

getch();

return 0;

}

For beginners

{After typing this program go to execute-->compile & run-->a window will pop-up-->give file name:(anything u like)-->save as type: c source files-->click save.}

IS IT HELPFIL? comment.