2. Chapter 2 Data Types and Arrays - compscisi/Programming-Fundamentals-1-SI GitHub Wiki

Special Characters

Character	Name	Meaning
//	Double Slash	Beginning of a comment
#	Pound sign	Beginning of preprocessor
< >	Open/close brackets	Enclose filename in #include
( )	Open/close Parentheses	Used when naming a function
{ }	Open/close brace	Encloses a group of statements
" "	Open/close Quotation marks	Encloses string of characters
;	Semicolon	End of a programming statement

Some Key Terms

• cout: Displays output on the computer screen
• endl: Starts a new line
• \n: Also starts a new line
• float: single precision - 1.000000
• double: double precision - 1.00000000000000

Binary arithmetic opeators

Symbol	Operation
+	addition
-	subtraction
*	multiplication
/	division
%	modulus(remainder)

Arrays

• Collection of data
• Has name and data type
• Name is used to refer to the collection
• Data type is what the array is a collection of
  • Declaring an array:

    int numbers[10];
    

• Int is type of data, numbers is the name of the array, 10 is number of integers in collection
  • Accessing element of an array:

    numbers[0] = 42
    cout << numbers[0];