Declare an array in the BSS segment

How do I declare a variable so that it gets placed in the BSS segment instead of on the stack/in the data segment?

Code:

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int a; /* Data segment? */
static int b; /* Data segment? */
char buf1[10]; /* Data segment? */
static char buf2[10] /* Data segment? */

int main(void)
{
        int c; /* Stack? */
        static int d; /* Data segment? */
        char buf3[10]; /* Stack? */
        static char buf4[10] /* Data segment? */

        return 0;
}

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The data segment contains variables that were initialized to some value. The BSS segment is where uninitialzed data is stored.

Code:

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int a;//BSS segment
int b=1;//data segment

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Same thing for static variables.