Esatto, non la supporta :@

Comunque sia adesso pare funzionare

codice:
#include <windows.h>
#include "c:\Users\Salvatore\Desktop\C\math.h"
#pragma comment (lib, "winmm.lib")
#include <mmsystem.h>
#include <stdlib.h>
#include <stdio.h>
int main(){
	int a;
	int b;
	a = 9;
	b = 6;
	printf("Somma tra %d e %d: %d\n\n",a,b,math_add(a,b));
	PlaySound(TEXT("c:\\Users\\Salvatore\\Desktop\\C\\cp.wav"), NULL, SND_FILENAME);
	Sleep(1000);
	printf("Differenza tra %d e %d: %d\n\n",a,b,math_sot(a,b));
	PlaySound(TEXT("c:\\Users\\Salvatore\\Desktop\\C\\cp.wav"), NULL, SND_FILENAME);
	Sleep(1000);
	printf("Prodotto tra %d e %d: %d\n\n",a,b,math_mol(a,b));
	PlaySound(TEXT("c:\\Users\\Salvatore\\Desktop\\C\\cp.wav"), NULL, SND_FILENAME);
	Sleep(1000);
	printf("Quoziente tra %d e %d: %d\n\n",a,b,math_div(a,b));
	PlaySound(TEXT("c:\\Users\\Salvatore\\Desktop\\C\\cp.wav"), NULL, SND_FILENAME);
	Sleep(1000);
	printf("Resto tra %d e %d: %d\n\n",a,b,math_rest(a,b));
	PlaySound(TEXT("c:\\Users\\Salvatore\\Desktop\\C\\cp.wav"), NULL, SND_FILENAME);
	Sleep(1000);
	system("pause");
}
Grazie di tutto