/NTC/ New to coding

shameless self bump.

>>56497197
That isn't Visual Basic. That is C++.

The `double` line is declaring 3 variables named "hours", "rate" and "pay", and `double` is the type of the variables. The type `double` is a floating point number, which means it's a number which isn't an integer and has more precision, to (approximately) store numbers with decimal places like `1.5`.

>>56497268
so having "double" in the line allows the data range when hours and rate are input and when pay is output to be much larger? including decimals.

and yeah, i know it is C++, though the program I am "Coding" in is visual basic 2012

>>56497268
sorry, I am using Microsoft Visual Studios.

Firstly, this violates the rules, but whatever
Secondly, this isn't visual basic
Thirdly, you can litteraly google that
And lastly, simply, it's just a number that can have a decimal point

A double is a 64 bit complementary signed IEEE 754 standard floating point number.

>>56497357
I apologize, I was not aware this violated a rule. And thank you for the clarification. I did google it but I just wanted to make sure what I read was what I thought it was. It's a lot to take in at once, but I appreciate you guys assisting me. Thank you

>>56497333
If you want to use a variable in C++, you have to declare it first, which involves giving it a type.

All you do to declare a variable is type

variable_type variable_name;

, for example

int number_of_days;

or

double rate;

.

In C++ there is also a shortcut for declaring multiple variables at once, by doing

variable_type variable1, variable2, variable3;

, which is what is happening here with

double hours, rate, pay;

Using a `double` does actually allow for a larger range than using an `int`, but the integer types available in C++ can typically have a very large range. `double` is used here simply for more accuracy, since an integer is a number with no decimal places. Though you probably will find that there are a couple of unusual problems you can run into using floating point numbers for accurate calculations involving money.

>>56497515
That helped a lot, thank you.

>>56497393
Not any of these anons, but a piece of advice: 1. Do not "using namespace std;" in global scope (see namespace polution) 2. Computers can't calc fractions and decimals correctly. For a computer (1/3)3 would be 0.(9), not 1. Overall adding fractions like (4/9) will produce wrong results, so you should avoid decimals at all if possible. Sometimes, it's just better to use a long int and just show it as a decimal to the user. Like: In memory - 1089(long int), to the user - 10.89.

>>56497333
>the program I am "Coding" in is visual basic 2012

oh boy

Gonna explain from the beginning so apologies if you know some of this already

In C++, variables have to be explicitly created (declared) before you use them. They also have a specific type that you assign upon declaration. You can declare a variable with the syntax

type varname

. You can also declare multiple variables of the same type in one go with

type varname1, varname2, varname3, etc

.

Line 7 in that programming is declaring three variables "hours", "rate", and "pay" of the type "double". These variables are used later on in lines such as

cin >> hours; //assigning user input to the hours variable
cout << pay //printing the pay variable's value to the screen

A double is a type of number in C++. In layman's terms, it's just a number that can have a really precise decimal value (e.g. 1.23456789). Other number types include "int" (an integer with no decimal) and "float" (another type of decimal that takes less space to store, but cannot be as precise)

>>56497627
Thank you, this was helpful as well

Can i ask questions too?
I tried many programming languages (as a hobby), and my favourite are java, c# and c++. I want to learn a language very well, and if possible use it for some small projects. What would you recommend? I already tried gtk#, javafx and qt and for what i need, they're both good.

Also, are rust and go actually worth learning or are they useless. Rust was fun to use with cargo and atom

>>56497197
Hi gentooman. If you like RuneScape, try making a bot with DreamBot or TopBot API (the latter is easier, but not that active).

Look at some tutorials on the forums, thats a really good way to kickstart your programming.

Also worth noting that you'll want to put << flush; at the end of your cout statements where there is no << endl;