log_printf() の動作サンプル
#include <SDL.h>
using namespace hrk;
int main(int argc, char *argv[])
{
static_cast<void>(argc);
static_cast<void>(argv);
log_set_file_name("log_message.txt");
log_printf("[warning] line 0\n");
log_printf("[warning] line 1, number: %d\n", 99);
log_printf("[warning] line 2, text: %s\n", "Hello, world.");
return 0;
}