Const Multi-Dimentional Array Member Variable

[NvrBst]

I'd like to do something like this but having a problem with the
proper syntax in the constructor, maybe someone knows the correct
syntax?

---MyClass.h---
#ifndef MYCLASS_H_
#define MYCLASS_H_

class MyClass {
public:
MyClass();
virtual ~MyClass();
private:
const char* const m_navi[1][1];
};

#endif /*MYMENU_H_*/
----------

---MyClass.cpp---
#include "MyClass.h"

MyClass::Myclas s() {
m_navi = { {"1"} };
}

MyClass:~MyClas s() {
}
----------
1. I get an "expected ';' before '{' token" error at the "m_navi = {"
line. I also get an "uninitaliz ed member "Myclass::t " error.
2. If I change "m_navi = {" to "MyClass::m_nav i = {" I get the same
errors as "1.".
3. I've tried declaring it in the header file directly (const char*
const m_navi[1][1] = { {"1"} };) and get an "a brace-enclosed
initializer is not allowed here before '{' token" error.
4. I've tried making it static (static const char* const m_navi[1][1]
= { {"1"} };) and get the same errors as "3."
5. If I move the (const char* const m_navi[1][1] = { {"1"} };) into
the "main.cpp" file (above the "int main() {" line) then it compiles
fine and I can use it fine in the main function.

Question: Whats the proper way to assign the (const char* const m_navi
[1][1]) inside the constructor? Assuming the above "MyClass.h" and
"MyClass.cp p" files? Thanks

Note: The member variable can be static if that makes it easier; the
data inside "m_navi" never changes once it is set, and there is only
one instance of "MyClass" ever created; I would like to set the value
inside the constructor though if possible since values in "m_navi"
potentially gets updated between builds, so I'd only have to change
the ".cpp" file, but this isn't 100% nessisary.

I'm using Eclipse 3.2.2, on a Ubuntu 8.10 Machine. g++ Version
"4.2.4". Thanks.

[Adem]

"NvrBst" wrote:

>
I'd like to do something like this but having a problem with the
proper syntax in the constructor, maybe someone knows the correct
syntax?

---MyClass.h---
#ifndef MYCLASS_H_
#define MYCLASS_H_

class MyClass {
public:
MyClass();
virtual ~MyClass();
private:
const char* const m_navi[1][1];
};

#endif /*MYMENU_H_*/
----------

---MyClass.cpp---
#include "MyClass.h"

MyClass::Myclas s() {
m_navi = { {"1"} };
}

MyClass:~MyClas s() {
}
----------
1. I get an "expected ';' before '{' token" error at the "m_navi = {"
line. I also get an "uninitaliz ed member "Myclass::t " error.
2. If I change "m_navi = {" to "MyClass::m_nav i = {" I get the same
errors as "1.".
3. I've tried declaring it in the header file directly (const char*
const m_navi[1][1] = { {"1"} };) and get an "a brace-enclosed
initializer is not allowed here before '{' token" error.
4. I've tried making it static (static const char* const m_navi[1][1]
= { {"1"} };) and get the same errors as "3."
5. If I move the (const char* const m_navi[1][1] = { {"1"} };) into
the "main.cpp" file (above the "int main() {" line) then it compiles
fine and I can use it fine in the main function.

Question: Whats the proper way to assign the (const char* const m_navi
[1][1]) inside the constructor? Assuming the above "MyClass.h" and
"MyClass.cp p" files? Thanks

Note: The member variable can be static if that makes it easier; the
data inside "m_navi" never changes once it is set, and there is only
one instance of "MyClass" ever created; I would like to set the value
inside the constructor though if possible since values in "m_navi"
potentially gets updated between builds, so I'd only have to change
the ".cpp" file, but this isn't 100% nessisary.

I'm using Eclipse 3.2.2, on a Ubuntu 8.10 Machine. g++ Version
"4.2.4". Thanks.

You have a typo in your source ("Myclass" vs. "MyClass") :-)
One of the possible solutions would be the following:

// in header file:
class MyClass
{
public:
MyClass() {}
virtual ~MyClass() {}
private:
static const char* const m_navi[1][1];
};

// the following must not be placed in the header file:
const char* const MyClass::m_navi[1][1] = { { "1" } }; // static init

int main()
{
MyClass m;
return 0;
}

[NvrBst]

On Nov 12, 7:15*pm, "Adem" <for-usenet...@alice who.comwrote:

"NvrBst" wrote:

I'd like to do something like this but having a problem with the
proper syntax in the constructor, maybe someone knows the correct
syntax?

---MyClass.h---
#ifndef MYCLASS_H_
#define MYCLASS_H_

class MyClass {
public:
* *MyClass();
* *virtual ~MyClass();
private:
* *const char* const m_navi[1][1];
};

#endif /*MYMENU_H_*/
----------

---MyClass.cpp---
#include "MyClass.h"

MyClass::Myclas s() {
* *m_navi = { {"1"} };
}

MyClass:~MyClas s() {
}
----------

1. *I get an "expected ';' before '{' token" error at the "m_navi ={"
line. *I also get an "uninitaliz ed member "Myclass::t " error.
2. *If I change "m_navi = {" to "MyClass::m_nav i = {" I get the same
errors as "1.".
3. *I've tried declaring it in the header file directly (const char*
const m_navi[1][1] = { {"1"} };) and get an "a brace-enclosed
initializer is not allowed here before '{' token" error.
4. I've tried making it static (static const char* const m_navi[1][1]
= { {"1"} };) and get the same errors as "3."
5. If I move the (const char* const m_navi[1][1] = { {"1"} };) into
the "main.cpp" file (above the "int main() {" line) then it compiles
fine and I can use it fine in the main function.

Question: Whats the proper way to assign the (const char* const m_navi
[1][1]) inside the constructor? *Assuming the above "MyClass.h" and
"MyClass.cp p" files? *Thanks

Note: The member variable can be static if that makes it easier; the
data inside "m_navi" never changes once it is set, and there is only
one instance of "MyClass" ever created; I would like to set the value
inside the constructor though if possible since values in "m_navi"
potentially gets updated between builds, so I'd only have to change
the ".cpp" file, but this isn't 100% nessisary.

I'm using Eclipse 3.2.2, on a Ubuntu 8.10 Machine. *g++ Version
"4.2.4". *Thanks.

You have a typo in your source ("Myclass" vs. "MyClass") *:-)
One of the possible solutions would be the following:

// in header file:
class MyClass
* {
* * public:
* * * MyClass() {}
* * * virtual ~MyClass() {}
* * private:
* * * static const char* const m_navi[1][1];
* *};

// the following must not be placed in the header file:
const char* const MyClass::m_navi[1][1] = { { "1" } }; * // static init

int main()
* {
* * MyClass m;
* * return 0;
* }

Thank you :) That worked dandily. I think I got mixed up since I
kept trying to do it in either the header file, or the ctor. Thanks
once more.

[NvrBst]

Another Initialization Question if Possible; Kind of relates to the
top. Is there a short hand way to initializat during a new operator?
For example I can do the following:
----- CAN DO -----
const char** FSETUP[2] = {
new const char*[2],
new const char*[4]
}
int main() {
FSETUP[0][0] = "T1";
FSETUP[0][1] = "T2";
//ETC
return 0;
}

----- WOULD LIKE TO DO BUT ERRORS -----
const char** FSETUP[2] = {
new const char*[2] {"T1","T2"},
new const char*[4] {"F1","F2","F3" ,"F4"}
}
int main() {
return 0;
}
It has to stay a jagged array. All examples online I find intalizae
the jagged array the long way, is there a short way to set it when it
is being initialized? The error is "Expected ';' before '{'")