C compiler with embedded metalanguage.
您最多选择25个主题
主题必须以字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
|
|
#if defined X
|
|
|
X
|
|
|
#endif
|
|
|
|
|
|
#if defined(X)
|
|
|
X
|
|
|
#endif
|
|
|
|
|
|
#if X
|
|
|
X
|
|
|
#endif
|
|
|
|
|
|
#define X 0
|
|
|
|
|
|
#if X
|
|
|
X
|
|
|
#endif
|
|
|
|
|
|
#if defined(X)
|
|
|
int x = 0;
|
|
|
#endif
|
|
|
|
|
|
#undef X
|
|
|
#define X 1
|
|
|
|
|
|
#if X
|
|
|
int
|
|
|
main()
|
|
|
{
|
|
|
return 0;
|
|
|
}
|
|
|
#endif
|
