Visual Basic to C++ Syntax Translation

[Dren]

Hello,

I’m sorry for being off all the time (for nearly 2 years I guess) but I promise I won’t be again. When I was here for the first time I met TcM, he helped me translate something using a HEX-Editor and suggested me to start programming on Visual Basic 6 and I did so. For about 2 years I have been coding on VB6 and now I’m trying to start coding on C++. It doesn’t seem to be much hard because I have some C++ books but I can’t find some functions that I use on VB6 so I came back here to ask.

So, could anyone please tell me these functions on C++?

The VB6 functions:
Len()
Rigt()
Left()
Mid()
Chr() “or should I write my own?

Seems I have problems only with string functions. I don’t even know how to set a String Variable, only Char. As I read in one of my books C++ doesn’t support string variables longer than 1 characters so I have to use Arrays(wich I don’t know how in C++), I hope that’s not true.

Today I wrote a program for converting Base10 numbers to Base16 but I couldn’t print the output backwards.

The last question, do you suggest me C++ or Visual C++. I code only for Microsoft OS-es.

Thanks a lot,
Dren

[marwex89]

Include <cstring> and take a look at the high-level functions there.

string s1, s2; // Empty strings
string s3 = "Yo dude"; // Initialized
string s4("I am cool"); // Also initialized
s2 = "C++ sucks"; // Assigning to a string
s1 = s3 + " " + s4; // Combining strings
s1 += "8"; // Appending to a string

"There are libraries for everything!" (C++ librarian)

[Dren]

Originally Posted by marwex89

Include <cstring> and take a look at the high-level functions there.

string s1, s2; // Empty strings
string s3 = "Yo dude"; // Initialized
string s4("I am cool"); // Also initialized
s2 = "C++ sucks"; // Assigning to a string
s1 = s3 + " " + s4; // Combining strings
s1 += "8"; // Appending to a string

"There are libraries for everything!" (C++ librarian)

WoooooW, THANK U MAN, THANK U SO MUCH, that is relly GREAT. I Googled cstring C++ library and got all the functions I needed except Chr().

About the last questin, what do you suggest? Visual C++ or C++?

Thanks A TON

[MeTh0Dz|Reb0rn]

What do you mean Visual C++ or C++?

[marwex89]

Visual C++ = Microsoft Visual Studio (not 2008, that is MANAGED C++, but earlier) C++

C++ means usually GNU free compiler, like MingW.

I use the last one, but many people use the Express edition of VS. Try both, it's free

[MeTh0Dz|Reb0rn]

Oh okay? Lol, I kind of thought that, but wasn't really sure what someone would want to know about them.

Personally I use Dev-Cpp and Code::Blocks, which use Gcc/MingW.

[marwex89]

About char().... In C++ that's just a cast from an integer to char (32bit and 8bit), which can be done like this:

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char * argv[])
{
    int ASCII = 65;
   // int ASCII = 0x41; // In hexadecimal, if you need it
    char c1 = static_cast<char>( ASCII ); // Declare c1 as char, and perform cast
    cout << c1 << endl; // Display character (Uppercase A)
    system("PAUSE");
    return (EXIT_SUCCESS);
}

[Dren]

GOD **** IT I need study these **** libraries first That is GREAT Bro, I REALLY APPRECIATE YOUR HELP

About the C++ or VC++ that was what I was thinking of. So U suggest me C++? I dont have that but can I use the VC++ 6 ConsoleApplication method instead?

Will it be easier for me to get from C++ coding to VC++ creating forms and linking their objects to the code or am I wrong? I really need some suggestions, yesterday I started this and Im NOT going to give up.

THANX AGAIN marwex89, U R MY BRO

[marwex89]

No problem
VC++ and C++ is just the same... It doesn't really matter to most people, I guess it would take you about a week to get into VC++ IDE (wild guess) and their linking and form creating.

There is no form creating in C++ (Dev-C++, NetBeans etc), so unless you want to hard code your forms, I suggest you at least try Visual Studio to see if that's OK.

Warning: Pro edition = $$$, use Express

Using VC++ console app:
That's a template, with compiler and linking options set etc. All common C++ IDEs have those.

Any more I could help you with while we're at it?

EDIT:
BTW, you have VisualStudio 6???
Use it. Period
See a comparison on web between C++ in VS6 and newer. If nothing you absolutely MUST have, use VS6, I guess.

[dargueta]

Len() has several equivalents in C++.

1) For structures and primitives like int, etc., use sizeof().
2) For strings, use strlen() for primitive strings, i.e. char arrays. (include string.h)
3) I don't know how to get the length of a string string.
4) For dynamically allocated memory, use _msize() (include memory.h or malloc.h)