bool a = false;
foreach (int i in num)
{
if (num[i] % 7 == 0)
a = true;
break;
}
if (a)
Console.Write("有7的整倍数");
else
Console.Write("没有7的整倍数");
foreach (int i in num)
{
if (num[i] % 7 == 0)
a = true;
break;
}
if (a)
Console.Write("有7的整倍数");
else
Console.Write("没有7的整倍数");