#include <stdio.h>

/* define some external functions */
extern int func_a();
extern int func_b();

int
main(int argc, char* argv[])
{
    int a = func_a();
    int b = func_b();
    char c;
    char* bc = &c;

    printf("hello world,\n");
    printf("a - %d; b - %d;\n", a, b);

    return 0;
}