< Ada Programming < Delimiters

Ada. Time-tested, safe and secure.
Operator
Standard Operations
Arithmetic Subtraction
The "-" operator is defined as arithmetic subtraction for all numeric types.
function
"-" (Left, Right : T)return
T;
Usage
A :constant
Float := 5.0 - 2.0; -- A is now 3.0 B :constant
Integer := 5 - 2; -- B is also 3
Minus sign
The "-" unary operator is defined as arithmetic negative sign for all numeric types.
function
"-" (Left : T)return
T;
Usage
A :constant
Float := -5.0; B :constant
Integer := -5; C :constant
Integer := -B; -- C is now 5
See also
Wikibook
Ada 95 Reference Manual
Ada 2005 Reference Manual
- 4.4 Expressions (Annotated)
- 4.5.3 Binary Adding Operators (Annotated)
- 4.5.4 Unary Adding Operators (Annotated)
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