In VC++ compiler
struct what
{
int a;
int b;
};
In C, an struct of type "what" is created like: struct what this;
In C++, an object of type "what" can be instantiated like this: what this;
Is this defined in C++ Standard or just VC++ compiler I am using
implemented? 8 1566
C++ Standard defines it. Not VC++ compiler.
"Garma" <Ga*****@nosysserv.com> wrote in message
news:Q_********************@bgtnsc05-news.ops.worldnet.att.net... In VC++ compiler
struct what { int a; int b; };
In C, an struct of type "what" is created like: struct what this; In C++, an object of type "what" can be instantiated like this: what this; Is this defined in C++ Standard or just VC++ compiler I am using implemented?
Garma wrote: In VC++ compiler
struct what { int a; int b; };
In C, an struct of type "what" is created like: struct what this; In C++, an object of type "what" can be instantiated like this: what this; Is this defined in C++ Standard or just VC++ compiler I am using implemented?
Yes, it is defined in C++ standard. In C++ in this particular context
(declaration) you can do it either way. Keep in mind though that in C++
'this' is a keyword. You can't create an object named 'this'.
--
Best regards,
Andrey Tarasevich
Garma wrote: In VC++ compiler
struct what { int a; int b; };
In C, an [object] of type "struct what" is created like this:
struct what this;
In C++, an object of type "what" can be instantiated like this:
what this;
Is this defined in C++ Standard?
No.
'this' is a C++ keyword.
Or just VC++ compiler I am using implemented?
The ANSI/ISO C standards define the C programming language.
The ANSI/ISO C++ standards define the C++ programming language
If you define:
typedef struct what {
int a;
int b;
} what;
in C, you can create an object of type "struct what" like this:
what w;
"Garma" <Ga*****@nosysserv.com> wrote in message
news:Q_********************@bgtnsc05-news.ops.worldnet.att.net... In VC++ compiler
struct what { int a; int b; };
In C, an struct of type "what" is created like: struct what this; In C++, an object of type "what" can be instantiated like this: what this;
No it can't - 'this' is a keyword.
Is this defined in C++ Standard or just VC++ compiler I am using implemented?
Standard - but you can write:
struct what a;
In both C and C++ and it is still needed in some places in C++.
You can also get more C++ like in C by using:
typedef struct
{
int a;
int b;
} what;
what a;
"E. Robert Tisdale" <E.**************@jpl.nasa.gov> wrote in message > If
you define: typedef struct what { int a; int b; } what;
in C, you can create an object of type "struct what" like this:
what w;
You've got an extra "what" there, before the {, don't you? Should be just:
typedef struct {
int a;
int b;
} what;
....
what w;
-Howard
"Garma" <Ga*****@nosysserv.com> wrote in message
news:Q_********************@bgtnsc05-news.ops.worldnet.att.net... In VC++ compiler
struct what { int a; int b; };
In C, an struct of type "what" is created like: struct what this; In C++, an object of type "what" can be instantiated like this: what this; Is this defined in C++ Standard or just VC++ compiler I am using implemented?
Standard - new "feature" of C++ (over C).
Howard wrote: E. Robert Tisdale wrote:
If you define:
typedef struct what { int a; int b; } what;
in C, you can create an object of type "struct what" like this:
what w;
You've got an extra "what" there, before the {, don't you? Should be just:
typedef struct { int a; int b; } what; ... what w;
typedef struct what what;
typedef struct other {
what* p;
// . . .
};
struct what {
int a;
int b;
};
what w;
Howard wrote: "E. Robert Tisdale" <E.**************@jpl.nasa.gov> wrote in message > If you define:
typedef struct what { int a; int b; } what;
in C, you can create an object of type "struct what" like this:
what w;
You've got an extra "what" there, before the {, don't you? Should be just:
typedef struct { int a; int b; } what; ... what w;
-Howard
The first "what" is the struct's tag. The second is an alternative name
(via typedef) for the type "struct what". This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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