[Attempt] Properly made C++ Calculator

[Xel]

First of all
YES, I have the motivation and will to learn these things,
NO not just for hacking.

YES, I have been learning C++ for a few weeks now.
NO, I'm not sure if this calculator is even near to proper one.

So please help me to learn more, tell me what's wrong, not
recommended or just pure failure. I can take it.

#include "iostream.h"
#include "windows.h"
 
using namespace std;
 
int main()
{
    SetConsoleTitle( "Simple Calculator" );
    double num1,num2,result;
    char op;
 
    cout<<"Calculator\n\n";
    cout <<"+ = addition\n- = subtraction\n/ = division\n* = multiplication\n\n";
    while(cin>>num1>>op>>num2)
    {
        switch(op)
        {
                case '+': result = num1 + num2;
                break;
                case '-': result = num1 - num2;
                break;
                case '*': result = num1 * num2;
                break;
                case '/': 
                if (num2!=0)
                    result = num1 / num2;
                else
                    cout << "Error #1, Dividing with zero not defined\n\n";
                break;
                default: cout<<"Error #2, Invalid operator: '"<<op<<"'\n\n";
                continue;
        }
        if (num2!=0)
        cout<<"Answer: "<<result<<"\n\n";
    }
 
    return 0;
}

Example:

Calculator
 
+ = addition
- = subtraction
/ = division
* = multiplication
 
2+5
Answer: 7
 
2*298
Answer: 596
 
1337/0
Error #1, Dividing with Zero not defined!
 
524%5
Error #2, Invalid operator: '%'!

[Cypher]

I'd say what I'm thinking, but it would probably result in a ban.

So, I'll just say this...

I don't know where you're "learning" C++ from, but wherever it is, either they're terrible teachers or you're not paying enough attention.

[Xel]

@Cypher:

I would be more than thankful if you could point out where I went wrong.
If you do not have enough time (very possible if it's all wrong), could just
point the worst mistakes so that I can learn from them?

You can add me on MSN and honestly say what you think: Xel(a)Gmx.com.

Anyways.. Would a "if that and if this" calculator be better because I was able
to do that some weeks ago. The point was not to make a perfect calculator meaning
that it does not have possibilities to calculate more than 2 numbers at time.

I learned this "switch, while, case" stuff a short time ago and I thought that maybe
they could make the calculator a bit more proper than just a one based on dozens
of if's.

I am studying C++ from Finnish websites, whose quality might not be so great.
I don't own a good coding language skills (in English) and I have mainly come
across some very cryptic sites while trying to learn C++ from English websites.

[BonutDot]

I don't think you should switch statements in there at all. Switch is usually a replacement for a whole bunch of if statements. If you're going to be feeding your calculator program statements that would evaluate normally anyway (like 2+2), there's probably a simpler way to do it.

[hexonflux]

Cypher, it doesn't sound like Xel is looking to make an operating
system any time soon or hack the pentagon.... So maybe some
more encouraging words are in order?

My "constructive criticism" to -You- Cypher is, if you're going
to release an application after you just flamed countless people
for mistakes or errors in their syntax. Don't compile under .NET
and expect the rest of us Actual C++ programmers to rejoice in
the fact you're either really lazy or just a half-ass coder, period.
It's really just a slap in the face.


And back on topic:

The kid's learning C++ so give him some slack. At least he's not
handing out shitty information like a few others that have posted
tutorials or how-to's for C++. It's a small application that does a
few simple calculations. For what he knows and what it is, it's a
good step in the right direction.

GJ Xel, keep up the good work.


- Hex

[Cypher]

[SNIPPED]
My "constructive criticism" to -You- Cypher is, if you're going
to release an application after you just flamed countless people
for mistakes or errors in their syntax. Don't compile under .NET
and expect the rest of us Actual C++ programmers to rejoice in
the fact you're either really lazy or just a half-ass coder, period.
It's really just a slap in the face.
[SNIPPED]

What the **** are you talking about? Can you please rephrase that paragraph in English... (Or can someone here please do a Dipshit->English translation for me? Thanks.)

[hexonflux]

LuaNinja

* You will need the .NET 4.0 Beta 2 framework.

REALLY? REALLY? What happened to programming without
the help from a slow-ass runtime environment made by
Microphail?


So in more plain English, I'm criticizing the fact that you depend on
the .NET framework. Every programmer that I've ever met that's
not just some box-jockie and actually made more than 150k a year
for what they know has laughed at the idiots who rely on the
.NET framework. You have people from Verio, EDS, and Sun
Microsystems laughing at guys like you who think they know
everything when you really don't know... jack shit. You criticize
and flaunt your "programming skills" but you're just some little
punk with a few years of experience as opposed to the newbies
you pick on.

You should come meet a few friends of mine, Cypher. I'd like you
to talk to them like you talk to the kids on this forum and see if
you get the same gratification. I'm sure we'll all have a bundle of
laughs with you around.... don't forget your helmet. Wouldn't want
you to feel too retarded.


- Hex

[Nikentic]

Why would an helmet help against criticism?

[hexonflux]

o_O I really hope I don't have to explain that one.

[Cypher]

LuaNinja



REALLY? REALLY? What happened to programming without
the help from a slow-ass runtime environment made by
Microphail?


So in more plain English, I'm criticizing the fact that you depend on
the .NET framework. Every programmer that I've ever met that's
not just some box-jockie and actually made more than 150k a year
for what they know has laughed at the idiots who rely on the
.NET framework. You have people from Verio, EDS, and Sun
Microsystems laughing at guys like you who think they know
everything when you really don't know... jack shit. You criticize
and flaunt your "programming skills" but you're just some little
punk with a few years of experience as opposed to the newbies
you pick on.

You should come meet a few friends of mine, Cypher. I'd like you
to talk to them like you talk to the kids on this forum and see if
you get the same gratification. I'm sure we'll all have a bundle of
laughs with you around.... don't forget your helmet. Wouldn't want
you to feel too retarded.


- Hex

Lol @ you.

The loader and hack are written in C++, the GUI is written in C#. But it's irrelevant.

That post alone makes it obvious you don't have a clue what you're talking about. Stop living in the 90s. When you're ready to join us in the 20th century, let me know, and I'll be happy to help catch you up.

The fact that you don't know anyone who makes over 150k a year and uses .NET simply means YOU DON'T KNOW ANYONE.

I've yet to see any of your posts actually give evidence or reasons to back up your claim other than purely subjective hearsay like "it's slow" and "it's big". You're so brilliant (though I have yet to see any evidence of that), and your friends are so smart (again, yet to see any evidence of that either), so how about you show me why .NET sucks so much?

Rofl. Have fun living in fairly land.

[hexonflux]

Tsk. Tsk.

Do not use high level languages, libraries, frameworks, virtual machines or runtimes in core operating system processes

For one .NET Framework is not for core operations. "Stop living in the
90s".

The 90s? When .NET Framework becomes a vital component to the
development of Linux/Unix based operating systems then I'll give it a
go. Until then I think I'll stick with C++.


So .NET Framework has thousands of functions and libraries to work
with. And you even have added security features. It's not a pain in the
ass to install anymore and you don't have to worry about compatibility
with other up-to-date windows operating systems 70% of the time.
But when you go from 9 years of C++ to some moron flaunting his nuts,
it's kinda irritating.

I guess if you want to go through a second runtime, and relish
in the same phailpool that Microsoft has been swimming in since it's
very existence then that's you. Maybe using the new beefed version
of C++ that Microsoft has thrown together and ****ed up beyond
recognition is more fun.


Think of it this way. Lets say you're going to work for a federal
bank, much like my father does. You're the head of administration
and you're having to keep tabs on everything that's going on.
Maybe there's an issue. You need to log into one of the
upper-security data centers on level B. Are you going to bust out
the Microsoft Visual C++ Express edition and go to work? **** no
you're going to login via SSH and use at least 4 different
programming languages including C++ and Perl for web based apps.

You need speed. .NET Framework is a second runtime which handles
all of the applications resources completely different than the 'naked'
operating system. The Microsoft website says that everywhere.

You need versatility. Perl and C work amazing together. The fact that
Perl is so fast and you can make almost any application using it. And
C is old, yea, but it does the job just fine. C++ being a beefed up version
of C ( the ++ in C++ is from the increment operator ) is just icing on the
cake. Do you know why I laugh when I see .NET and security in the
same sentence? Because you didn't write the damn function you instead
frowned on what's considered the depreciated API library and used the
.NET Framework.


You wanted a reason why .NET Framework sucks, well there ya go.
When speed, power, reliability, assurance, and overall compatibility
is needed; .NET Framework is no where to be found.


Cypher you're just some punkass kid. You're no better than the 35
year old men who ran the MyG0t clan in Counter-Strike. Using cheap
ass tricks to lure people to test their applications. Not knowing even
half of what they're coding. Just copying and pasting from a manual
or a tutorial because it sounded right at the time. Analyzing applications
with a disassembler, 'thinking' they know what they're talking about.

Hell maybe you knew some of them. I don't know. But what I do know
is if you even remotely think you know anything. Then you'll always
know nothing. Period.



- Hex

[Cypher]

Hahahaha, oh my god this shit is just too funny.

Awesome work posting a wall of text yet somehow STILL managing to not do what I've asked.

When you're ready to stop spewing hearsay/lies/misconceptions/etc and start presenting some actual evidence so we can have a civil dicussion, let me know. Otherwise I'm gonna go do something more productive (like talking to my cat, or a brick wall. at least then I don't have to listen to them spewing garbage like you).

P.S. The fact that you think the support article you linked is relevant shows how little you know. We're not talking about writing parts of the core OS here, we're talking about 'normal' applications (you were the one who brought up my Lua hack, and it certainly does not come under the same category as Winlogon or LSASS).

[Apoc]

Holy hell; I think 1/2 my brain just died.

To respond to your KB article; did you even read it?

We recommend that you only use C languages and Win32 APIs for any add-in components that are loaded by core operating system processes. Two examples of core operating system processes are Winlogon.exe and Lsass.exe.

The behavior of any high-level language, framework, or runtime in the components that are loaded by core operating system processes is undefined. For example, the Microsoft .NET Framework and the common language runtime were not designed to run in the context of core operating system processes.

They tell you not to use it; since they DON'T KNOW WHAT MAY HAPPEN. Very different to 'don't use it because it's slow/sucks/etc/etc'.

At any rate; any of your 'intelligent friends' or whatever you want to call your imaginary friends now; would know that coding something very simple [such as Cypher's loader GUI] makes no difference which language it's in. Coding it in C# just avoided a few minutes of extra dev time by having the GUI designer do most of the heavy lifting.

Also; to put your dumbass argument about speed aside; the .NET runtime [in most cases] runs as fast as native C++ applications. Why is that? Because in the end; THEY ARE NATIVE APPLICATIONS. Granted; certain 'low level' tasks [such as dropping down to ASM level for the utmost in optimizations] aren't available in .NET. But then again; if you need to get that low level; you don't use .NET anyway.

If you want to throw arguments around like a retarded ass monkey with a pipe up his ass; at least do some research. .NET was made originally for Windows programming. Not Mac/Linux/anyotherflavoroflinuxyoufapto. The fact Mono came to be just supports how good .NET is, and how well received it was.

Also; Cypher actively contributes to multiple open source projects [ReactOS, Wine, Chrome, FireFox], what do you do? Talk to your non-150k a year friends that don't work at Sun?

Show proof you even know what the hell you're talking about [and no; Googling 'why not to use .NET' doesn't count] and maybe I'll have an intelligible conversation. Until then; I leave you with 3 words. DERP DERP DERP.

[Xel]

WoW that helped me alot, thanks :-/.