Thread: error with scanf statement in codeblocks

I am new to c programming.I use codeblocks on windows xp.I get an error when I run the following code

Code:

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

int  main()
{
    int a;
    printf("enter a number\n");
    scanf("%d",&a);
    printf("you entered %d",&a);
    return 0;
}

the error says
format %d expects type int
but argument 2 has type int.

please solve this