switch的case 0 ... 4:在GCC中编译成功，在VC 7.1编译失败。
switch的case 0 ... 4:在GCC中编译成功，在VC 7.1编译失败。
//处理case N:在一个区间的值时，可用case 开始值 ... 结束值:句法。
#include <iostream>
int main()
{
using namespace std;
cout < < "switch test,please input number 0 to 9\n ";
int n;
while (cin > > n)
{
switch (n)
{
case 0 ... 4:
cout < < "n is between 0 and 4.\n ";
break;
case 6 ... 9:
cout < < "n is between 5 and 9.\n ";
break;
default:
cout < < "n is out of [0,9].\n ";
break;
}
}
system( "PAUSE ");
return 0;
}
难道的GCC编译器的特殊支持。
[解决办法]
貌似是 gcc 扩展, C99 也没见这种语法 ...
[解决办法]
-pedantic-error
[解决办法]
gcc对c的扩展,没什么好说的
[解决办法]
GCC extension. Refer to GCC Manual (available in "info " pages or online) for more details on language standards compliants and extensions.
