易错点：C++ switch case中定义变量

不止一次遇到，特此记下，以防再望

下面的代码会报错

int i=0;
	switch(i)
	{
	case 1:
		int j=1;
		break;
	case 2:
		i++;
		break;
	default:
		break;
	}

Error 1 error C2360: initialization of 'j' is skipped by 'case' label d:\programing\windows\basicwindows\varable_list_test\varable_list_test.cpp 55

Error 2 error C2361: initialization of 'j' is skipped by 'default' label d:\programing\windows\basicwindows\varable_list_test\varable_list_test.cpp 58

修改为：

	int i=0;
	switch(i)
	{
	case 1:
		{
			int j=1;
		}
		break;
	case 2:
		i++;
		break;
	default:
		break;
	}