1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mila [183]
3 years ago
15

What is the basics of C++

Computers and Technology
1 answer:
arlik [135]3 years ago
3 0
Here are the basics of C++...

Number 1. Printing text onto the screen:
std::cout << "Your text here\n"; 
The \n creates a new line.

Number 2. Initializing variables and setting variables
There are a few different types of variables in C++...
Integers, floats, chars, and strings.
To let C++ know what type of variable you are about to create, you put the type before the variable name.

Here are some examples:
int number = 10;
float r = 2.45;
char[4] = "Code";
string name = "Bob";

Number 3. Comments

In programming comments are very useful. They help other programmers understand your code.

To make a single line comment in C++ you do this:

// your comment

To make a multi-line comment in C++ you do this:

/*
My multi-line comment here
*/

Number 4. Math

In C++ you have math operators. These operators are + - * / %
I'm pretty sure you are familiar with the first four operators. But you may not know the last one. Don't worry... I'll explain that one to you.

Addition:

std::cout << 35 + 23 // this will print out 58

Subtraction:

std::cout << 102 - 56; // this will come out as 46

Multiplication:

std::cout << 34 * 9; // product will be 306

Division:

std::cout << 164 / 4; // quotient will be 41

Modulus:

Now we get to the operator you may or may not know. The modulus.
The modulus operator gets the remainder of division of a by b.

std::cout << 10 % 4; // it will print out 2

You can even store math operations in variables...

int answer = 40 + 38;
std::cout << answer; // this will print out 78

You can even add variables...

int x = 28;
int y = 58;
int answer = 86;
std::cout << answer;
std::cout << x + y;

Number 5. Comparison Operators.

Comparison operators compare two values to see if its true or false...
These are mainly used in if statements...

Here are the comparison operators:

== Equal
!= Not equal
> Greater than
< Less than
<= Less or equal
>= Greater or equal

Number 6. If Statements

This is the structure of an if statement:

if(...){
// execute code if true
} else if(...){
// execute this block of code if first if statement was false
}else {
// execute this block of code if false
}

if(2 > 1) {
std::cout << "2 is greater than 1";
}

The code above will indeed execute. Because two is greater than 1.

Number 7. Functions

If you have a block of code that will be repeated multiple times through out your program, functions will be handy.

To make a function you must specify the type of the function. This called the return type.
Which are int (integers), floats (decimals), and string (strings).
There are more, but I decided to focus on those three.

Then you give your function a name. 

int my_function(){
// your code
}

To call a function, you simply type the name of the function with parentheses.

my_function();

To make a function with parameters, do same thing above, except in the parentheses you give your parameters.

int my_function(int x, int y){
// your code
}

As you can see, you separate the parameters with a comma.

in my_function(int x, int y){
int z = x + y;
std::cout << z; // this will print out the sum of x and y
}

To call your function with parameters, type your function name with parentheses and in the parentheses type your values.

my_function(3, 4); // this will print out 7

Also, another type of function is the void type. In int type functions, at the end of your code in the function, you should type return 0.
This allows C++ know that code wen't without any errors...

In void type function this isn't really necessary...

If you have anymore questions or you found something to be confusing or you want to learn more C++, please write me a message.



You might be interested in
What is a computer modem?​
ahrayia [7]

Answer:

A modem modulates and demodulates electrical signals sent through phone lines, coaxial cables, or other types of wiring.

8 0
3 years ago
which classification of money describes money that can be accessed quickly and easily, and includes coins and paper money as wel
zhenek [66]

Money that can be promptly and easily appraised falls under the M1 Money classification.

<h3>What are broad and narrow money, respectively?</h3>

Broad money typically refers to M2, M3, and/or M4. The most liquid kinds of money, such as currency (banknotes and coins), as well as bank account balances that may be instantly changed into currency or used for cashless transactions, are generally referred to as "narrow money" (overnight deposits, checking accounts).

<h3>Describe Narrow Money.</h3>

All of the actual money that the central bank has falls under the category of "narrow money," which is a subset of the money supply. Demand deposits, money, and other liquid assets are included. In the US, "narrow money" is referred to as M1 (M0 plus demand accounts).

To know more about Money classification visit:-

brainly.com/question/28095328

#SPJ1

5 0
1 year ago
A threat analyst is asked about malicious code indicators. Which indicator allows the threat actor's backdoor to restart if the
joja [24]

Indicators of compromise enable system administrators and information security professionals to detect intrusion attempts or malicious activities.

Your information is incomplete as the options aren't provided. Therefore, an overview of indicators of compromise will be given.

Indicators of compromise means the pieces of forensic data that are found in files or system log entries to identify malicious activity on a network or system.

Indicators of compromise help IT and information security professionals to detect malware infections, data breaches, etc. Examples of indicators of <em>compromise</em> include log-in red flags, unusual outbound network traffic.

Read related link on:

brainly.com/question/25522987

8 0
3 years ago
Three primary types of data that a forensic investigator must collect, in this order: 1.Volatile data 2.Temporary data 3.Persist
posledela

Answer:

1. volatile data

2. temporary data

3. persistent data

seems like you already got it correct

Explanation:

7 0
2 years ago
Henry is designing a document for his architecture project. In which order should Henry preform the different tasks that are req
nadezda [96]

It is

Select an appropriate layout

Decide which current format...

Import or compose...

Proofread...

Check the print preview..

4 0
3 years ago
Other questions:
  • Answer the following questions which are based on the study "Patients' Engagement with Sweet Talk." Submit your answers to the e
    9·1 answer
  • A provides legal protection for something an individual has created
    12·1 answer
  • Help please<br>x + 1 = –x + (–5)​
    7·1 answer
  • For a parking payment app, what option would MOST likely connect a user to a third party/external gateway?
    10·1 answer
  • Do you remember your first 3D movie experience? What was the movie, what was the experience like, and why was it memorable? (If
    7·1 answer
  • In cell K8, create a formula using the SUM function that calculates the total of range D17:D20 and subtracts it from the value i
    7·1 answer
  • Tgif
    7·1 answer
  • The Internet is based on a U.S. government project called ________. Today, the Internet is a collection of networks, tied togeth
    5·1 answer
  • How you use ict today and how will you use it tomorrow
    14·1 answer
  • Do you trust machine learning application?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!