GWBASIC User's Manual

GW-BASIC User's Guide
● Logical
● Functional
6.4.1 Arithmetic Operators
The following are the arithmetic operators recognized by GW-BASIC. They appear in order of
precedence.
OperatorOperation
^ Exponentiation
- Negation
* Multiplication
/ Floating-point Division
+ Addition
- Subtraction
Operations within parentheses are performed first. Inside the parentheses, the usual order of
precedence is maintained.
The following are sample algebraic expressions and their GW-BASIC counterparts:
Algebraic ExpressionBASIC Expression
X–Z/Y
(X-Y)/Z
XY/Z
X*Y/Z
X+Y/Z
(X+Y)/Z
(X2) Y (X^2)^Y
X YZ X^(Y^Z)
X(-Y)
X*(-Y)
Two consecutive operators must be separated by parentheses.
6.4.1.1 Integer Division and Modulus Arithmetic
Two additional arithmetic operators are available: integer division and modulus arithmetic.
Integer division is denoted by the backslash (\). The operands are rounded to integers (must be
within the range of -32768 to 32767) before the division is performed, and the quotient is
truncated to an integer.
The following are examples of integer division:
10\4 = 2
25.68\6.99 = 3
In the order of occurrence within GW-BASIC, the integer division will be performed just after
floating-point division.
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