counting function calls on windows

//explanation : https://www.facebook.com/groups/arabcpp/permalink/759109994119678/?comment_id=759169170780427&offset=0&total_comments=12
// undefined behaviour (works on gcc)
#include <windows.h>
#include <stdio.h>

typedef double (*cos_t)(double);
int cos_count = 0;
double cos(double zawya)
{
cos_count++;

HINSTANCE c_runtime = LoadLibrary("msvcrt.dll"); // microsoft visual c runtime
cos_t cos_ptr = (cos_t)GetProcAddress(c_runtime, "cos");

return cos_ptr(zawya);
}
int main (void)
{
    cos(2);
    cos(2);
    cos(2);

    printf("%d cosine functions were called", cos_count);
}