whats illegal

[murryrandall]

please help me whats illegal in c++

[admkrk]

mov AX, 0x0f

[Krisando]

It means it's not allowed by design.

[MiiNiPaa]

Anything which makes program ill-formed or causes an undefined behavior.

[anup30]

if(illegal==bad)
    result = twoyearchildscode;
else
    result= nothing;