why we can not have a function in a function in c?

Asked Feb 23 '14 at 11:38

Active Feb 23 '14 at 11:38

Viewed 96 times

Why we cannot have functions like

int fun1( )
  {
       \\ statements;
        int fun2( )
            {
                \\ here we are defining a function in another function

            }
 }

So my question is that why the defination of fun2 is illegal?

asked Feb 23 '14 at 11:38

OldSchool

2,053
4
20
44

5

Because the standard doesn't allow that. – devnull Feb 23 '14 at 11:40
I would ask u a question : and what is the difference if you would define the fun2 legally and just call it from within fun1 ? – Roma-MT Feb 23 '14 at 11:40
@Roma-MT: Namespace collision stuff maybe.But as devnull said, it just isn´t allowed – deviantfan Feb 23 '14 at 11:41
Roma-MT there's a difference, you are polluting the namespace – Luis Alves Feb 23 '14 at 11:41
@zmo IMO *that* question doesn't ask for the *reason* why it's not allowed. – dyp Feb 23 '14 at 11:42
@LuisAlves what do u mean ? it is C – Roma-MT Feb 23 '14 at 11:42
@dyp it shows there are exceptions to the rule ;-) – zmo Feb 23 '14 at 11:44
I mean that by declaring a function legally (outside of fun2) you are not allowing to declare another function with the same name. (Of course that in C you you can't do nothing against this) – Luis Alves Feb 23 '14 at 11:47
@LuisAlves you mean if it would be allowed , that only fun1 could use it ? but still what is it good for , if C is not even OOP – Roma-MT Feb 23 '14 at 11:54
(GCC extension forgive it) is not a special issue of the implementation language. Just not allowed in C. – BLUEPIXY Feb 23 '14 at 11:57

why we can not have a function in a function in c?

0 Answers0