『壹』 函數fun的是：不斷從終端讀入整數變數a大於0變數c小於0的個數當輸入0時結束輸入通過形參pa和pb傳回主程序
void fun(int &pa, int &pb)
{
int a = 0, b = 0, c;
scanf("%d", &c);
while (c)
{
if (c > 0)
a++;
else
b++;
scanf("%d", &c);
}
pa = a;
pb = b;
}