Added escape sequences, operators in "terms-to-know-for-beginners" (#28832)
* Added escape sequences, operators in "terms-to-know-for-beginners" Added extra details/facts about multi-line comments in C++ Also fixed some indentation * fix: changed c++ to cpp
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Kyle Lobo
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Randell Dawson
Randell Dawson
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@ -8,11 +8,11 @@ title: IDE and Printing different text
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## IDEs mainly consist of 3 kinds of software :
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**1 Editor :** A slightly modified text editor to make coding easy. An example of an editor for coding is Notepad++.
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**1. Editor :** A slightly modified text editor to make coding easy. An example of an editor for coding is Notepad++.
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**2 Debugger :** Software that helps you find errors in your program , and resolve them before execution. Imagine FaceBook crashing on loading an application or a game crashing all of a sudden. To prevent faulty execution of a program, the debugger is a programmer's best friend.
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**2. Debugger :** Software that helps you find errors in your program , and resolve them before execution. Imagine FaceBook crashing on loading an application or a game crashing all of a sudden. To prevent faulty execution of a program, the debugger is a programmer's best friend.
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**3 Compiler :** A compiler is the part of the computer which converts your high level program code to machine code : 0s & 1s ; so that the computer's Central Processing Unit (CPU) can understand the commands and execute them. From now on, we will be using the word **compiler** frequently.
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**3. Compiler :** A compiler is the part of the computer which converts your high level program code to machine code : 0s & 1s ; so that the computer's Central Processing Unit (CPU) can understand the commands and execute them. From now on, we will be using the word **compiler** frequently.
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*Q : Try searching for an IDE on Google and run your first program on it . Check the output*
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@ -37,7 +37,7 @@ int main()
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The above code returns an error because at line 2, we have used a colon(:) instead of a semicolon(;)
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So, let's debug the error:
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```C++
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```cpp
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#include <iostream>
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using namespace std ;
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int main()
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@ -45,7 +45,6 @@ int main()
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cout << "I Love freeCodeCamp ! ";
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return 0;
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}
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```
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Note that now the program runs perfectly.
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@ -72,9 +71,11 @@ They are used to print certain special characters a compiler cannot display.
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* `\"` to print a double inverted comma
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* `\n` to print on a new line
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* `\t` for a horizontal tab
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* `\v` for a vertical tab
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* `\f` for a new page
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* `\\` for a backslash
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* `\?` for a question mark
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* `\a` plays an audible bell
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##### Now, let's try printing numbers and special characters with some escape sequences:
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@ -108,17 +109,18 @@ This is because we did not add the quotation marks for the second print statemen
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**The different types of comments and Syntax of a comment**:
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1 `//` ~ _Single Line Comments_ : The length of these comments is 1 line (the line it is typed on) .
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2 `/* */` ~ _Multi Line Comments_ : These comments can take up a space of more than one line.
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1 `//` ~ _Single Line Comments_ : The length of these comments is 1 line (the line it is typed on).
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2 `/* */` ~ _Multi Line Comments_ : These comments can take up a space of more than one line. This type of comment can also be used inside conditional statements/loops.
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#### Example of using comments:
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```cpp
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cout << "Hello Comment" << endl; //cout<<"Hello Comment"<<endl; , Single Line Comment.
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```cpp
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cout << "Hello Comment" << endl; // Prints "Hello Comment", This is a Single Line Comment.
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/* This is an example of a multi line comment. No output is generated for this .
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I now end the comment. :) */
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```
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```
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The output will be :
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@ -129,7 +131,10 @@ It should be noted that while comments do add an extra level of readability to o
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As you may notice, the comments are ignored during program execution and do not show up on checking the output of the program.
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## Operators
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### Operators
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Operators are symbols that helps us to perform specific mathematical and logical computations on operands. We can say that an operator operates the operands.
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#### Variable Designation
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* `*` Dereference
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* `&` Address (of operand)
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@ -140,8 +145,19 @@ As you may notice, the comments are ignored during program execution and do not
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* `>` greater than
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* `<=` less than or equal to
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* `>=` greater than or equal to
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#### Math Operators
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* `+` add two operands
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* `-` subtract two operands
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* `*` multiply two operands
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* `/` divide two operands
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* `++` increment
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* `--` decrement
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#### Logical Operators
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* `||` Logical OR
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* `&&` Logical AND
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#### Assigns the right expression/value to the left variable/pointer
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* `=` Assignment
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* `+= , -=` Addition/subtraction assignment
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@ -149,12 +165,12 @@ As you may notice, the comments are ignored during program execution and do not
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```cpp
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(7==5);
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(7 == 5);
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```
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This evaluates to false
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```cpp
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(7!=5);
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(7 != 5);
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```
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This evaluates to true
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