National Teaching and Learning Change ProgrammeInformation and Communication Technology:
Dictionary

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• ! (exclamation mark)
  Exclamation mark. Precisely what it does in a programming language depends on the specific language.
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• # (hash) (1)
  Hash. Precisely what it does in a programming language depends on the specific language.
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• # (hash) (2)
  Hash.
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• $ (dollar)
  Dollar sign. Precisely what it does in a programming language depends on the specific language.
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• & (ampersand)
  Ampersand. Precisely what it does in a programming language depends on the specific language.
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• && (ampersand, ampersand)
  Logical AND operator. If both expressions are true, the result is also true.
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• ( (opening bracket)
  Opening bracket, or parenthesis, used, for example, to group together the elements of an expression.
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• (I) email (you)
  A way of sending a message using a computer or other device to someone else who has suitable equipment and an email address.
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• (you) email (me)
  A way of receiving a message using a computer or other device to someone else who has suitable equipment and an email address.
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• ) (closing bracket)
  Closing bracket, or parenthesis, used, for example, to group together the elements of an expression.
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• * (asterisk)
  Asterisk. Precisely what it does in a programming language depends on the specific language. Most commonly used to indicate multiplication.
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• + (plus) (1)
  Plus sign. Indicates addition of two or more items.
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• + (plus) (2)
  Plus sign. Indicates addition of two or more items.
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• ++ (plus, plus)
  In postfix notation, an operator which increases indicates increasing (increments) the value of a variable. So var++ is the same as var=var+1.
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• - (hyphen, dash)
  Hyphen. Precisely what it does in a programming language depends on the specific language.
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• - (minus)
  Minus. Indicates a subtraction operation, subtracting one thing, such as a variable, from another.
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• -- (minus, minus)
  In postfix notation, an operator which reduces (decrements) the value of a variable. So var-- is the same as var=var-1.
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• . (decimal point, full stop)
  Decimal point.
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• / (forward slash)
  In a URL, it separates the different parts of the address, e.g. http://www.bbc.co.uk/tv
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• / (forward slash)
  Forward slash. Precisely what it does in a programming language depends on the specific language. Commonly used to indicate division.