Dynamically allocating structures. HW question.

[mishappp]

cheers

[coder777]

what am I doing something wrong?

There is nothing wrong with it. That's the way union work. And yes: it's a good idea to have the type of the code.

You cannot change the enum (at runtime), but you can very well change the value of charType

[EDIT] The second struct is supposed to look like this:

struct CharacterNode
{

union charCode
{
	char AsciiCode;
	unsigned char EbcdicCode;
	unsigned short UnicodeCode;
} CharCode; // Note

enum CharType { ASCII, EBCDIC, UNICODE } charType; // Note
};

You can use both

[mishappp]

Thank you very much! So when the question asks,

Your code should populate and display all three CharacterTypes

What exactly is it asking? Because the character types are the enums.

[coder777]

Use an arrray, like so:

#include<iostream>
#include<iomanip>
#include<string>
using namespace std;

union CharacterCodes
{
	char AsciiCode;
	unsigned char EbcdicCode;
	unsigned short UnicodeCode;
};

enum CharacterType { ASCII, EBCDIC, UNICODE };

struct CharacterNode
{
	CharacterType charType;
	CharacterCodes CharCode;
};

int main()
{
	CharacterNode* charPtr = nullptr;
	charPtr = new CharacterNode[3]; // Note
	charPtr[0].charType = ASCII;
	charPtr[0].CharCode.AsciiCode = 'a';
	charPtr[1].charType = UNICODE;
	charPtr[1].CharCode.UnicodeCode = 'b';
	charPtr[2].charType = EBCDIC;
	charPtr[2].CharCode.EbcdicCode = 501;

for(int i = 0; i < 3; ++i)
{
    // show charPtr[i]
}

}