Couple C++ Questions

[Algar]

1) How do I make for-next loops?
2) How do I make Do-Loop loops?
3) On Do-Loop loops, do I need a certain thing like DoEvents?
4) What's the InStr of C++?
5) What's the Split of C++?
6) How do I connect to something in winsock and get data from winsock in C++?
7) Where can I learn OpenGL in C++?

Thanks for your help as I have started C++ like yesterday.

[SteveCRM]

if you started yesterday forget about 6 and 7 for quite some time...otherwise www.cprogramming.com has some good tutorials

[CornedBee]

Considering 3, there's no such thing as DoEvents in C++.
C++ is not a graphical language. It's multipurpose. VB is designed for a graphical windowing system and an event-based architecture. C++ is not designed for anything.
Given that there are no events in C++ itself, there of course is no DoEvents in C++.
In addition, most programs you will create in your early days will be console programs, which shut you off from the quite complicated windows programming environment. Console programs don't have events, so there is no need for anything like it.
When you proceed to windows programming you'll encounter events. You will response to those events with code.
BUT: DoEvents in VB is just a poor remedy for the lack of threads. In C++ you can use multithreading, which is far superior to DoEvents. This, however, is a quite advanced concept.

[Algar]

OK I'm learning from cprogramming.com. I have a question. Undefined integers start in the negative millions right?

[Balron]

Failure to initiliaze will start you in the negative millions sometimes...

Just initialize all your variables and it won't happen.

Because 'Strings' don't exist exactly in C++ but are a actually classes Split doesn't exist however there are many good string.h classes with the Tokenize function which basically is the same thing.

As for the for loops...I suggest use while loops as they are easier to use and understand. Also for loops change from compiler to compiler so they really are just a bad choice until your certain you will be using compiler X for all time or know how to convert them correctly.

while(conditions)
{
events
}

for(type var_name; condition; incrementation)
{
events
}

[Algar]

1 more question, how can I get the UBound of a char array?

[twanvl]

1 more question, how can I get the UBound of a char array?

You can't (unless it is created as a local variable, but usually it is not). That's why it's better to use std::string for strings and std::vector for other arrays. both have a .size() member, which you can use to determine their size.

[CornedBee]

Please ignore what Balron said.

Just initialize all your variables and it won't happen.

That's a waste. You must at one point assign a value to a variable before you can use it otherwise, but that doesn't mean you must initialize every single one.
It really depends on the situation.

Because 'Strings' don't exist exactly in C++ but are a actually classes Split doesn't exist however there are many good string.h classes with the Tokenize function which basically is the same thing.

???
string.h is in C++ a deprecated header that doesn't contain any class. string.h is superseded by cstring. The std::string class is declared in string.
For Split, search this forum for split_string or go to www.boost.org and get their boost::string_tokenizer class.

As for the for loops...I suggest use while loops as they are easier to use and understand. Also for loops change from compiler to compiler so they really are just a bad choice until your certain you will be using compiler X for all time or know how to convert them correctly.

While loops are not as powerful as for loops. Use each where it makes sense. The "change" from compiler to compiler is a minor one and easily avoided.

Here's how while and for loops really work:

while(expression)
{
  statements
}

Execution:
start the loop
if expression is false stop looping
do statements
restart loop

while(expression1; expression2; expression3)
{
  statements
}

Execution:
evaluate expression1
start the loop
if expression2 is false stop looping
do statements
evaluate expression3
restart loop

If you want the length of a C-style string use strlen.