Please study the 16 vocabulary terms below. Then press the Mark Complete button to continue.
- & (ampersand)
- a key which is used in many languages to mean 'and'
- * (asterisk)
- the character which often means "multiply" in a math equation or "match all" in a RegEx wildcard
- @ (at sign)
- the sign often used in email addresses to separate usernames from domain names
- \ (back slash)
- a key used for separating files and folders, normally in a Windows file system
- brackets
- the punctuation marks '{' and '}' used in pairs to set apart or interject text within other text
- case
- in typography this is the distinction between capital (big) and minuscule (small) letters
- / (forward slash)
- a key used to separate folders and files, often used in Unix file systems
- > (greater than sign)
- the sign which means that the value on the right is less than the value on the left
- < (less than sign)
- the sign which means that the value on the left is smaller than the value on the right
- - (minus sign)
- the operator sign often indicating the process of subtraction or difference
- parentheses
- the punctuation marks '(' and ')'used in pairs to group values or sets of values
- % (percent sign)
- the sign meant to show a common measurement based on a fraction of 100
- + (plus sign)
- the operator sign normally indicating the operation of addition
- square brackets
- the punctuation marks '[' and ']' used in pairs to set apart or interject text within other text
- ~ (tilde)
- this key normally means "approximately" in mathematics; in Unix systems this character is used to represent a home directory
- _ (underscore)
- a character often used in file names to join words without using a space; originally used on typewriters to make underlined text
US
UK
US
UK
In SQL queries it is best practice to spell out 'AND' and not just use the ampersand (&) as a shortcut.
US
UK
US
UK
The programmer could not remember whether to use an asterisk (*) or a percent sign (%) as a wildcard in his SQL regular expression.
US
UK
US
UK
The at sign key is often in very different locations on many international keyboards.
US
UK
US
UK
The user files were located in 'C:\documents and settings\gregbrady\my documents'.
US
UK
US
UK
In programming languages, brackets are often used to denote blocks of executable code.
US
UK
US
UK
In order to change case on a computer, the user typically presses the "Shift" key.
US
UK
US
UK
The user's php binary was located in /usr/local/php.
US
UK
US
UK
5 > 3
US
UK
US
UK
3 < 5
US
UK
US
UK
The program did not output the expected result because the programmer forgot a minus sign.
US
UK
US
UK
Parentheses are often used to group values in an equation.
US
UK
US
UK
The CEO reported that sales were up 75% over last quarter.
US
UK
US
UK
The elementary school teacher told the students that 2 + 2 = 4.
US
UK
US
UK
In programming languages, the use of square brackets are sometimes used to show the elements of an array.
US
UK
US
UK
The student learned that his home directory was 'home/~johndoe' and his web directory was 'http://www.university.co.uk/students/johndoe'.
US
UK
US
UK
The long file name "hippy_dippy_string_concatenation.pl" contained many underscores because spaces aren't advised in Unix file names.