#include <stdlib.h>
#include <stdio.h>

// Build with
// cc -shared -fPIC native_test.c -o native_test.so
// or
// cc -shared -fPIC native_test.c -o native_test.dll

int labashka(unsigned short (*pop)(void), void (*push)(unsigned short), size_t (*len)(void), size_t max_size ) {
    printf("At %zu, there's %d.\n", len(), pop());
    push(12);
    printf("Maximum size is %zu.\n", max_size);
    return 0;   
}