Android How to Program, 3/e

A.7 Arithmetic

Most programs perform arithmetic calculations. The arithmetic operators are summarized in Fig. A.11. Note the use of various special symbols not used in algebra. The asterisk (*) indicates multiplication, and the percent sign (%) is the remainder operator, which we’ll discuss shortly. The arithmetic operators in Fig. A.11 are binary operators, because each operates on two operands. For example, the expression f + 7 contains the binary operator + and the two operands f and 7.

Fig. A.11 Arithmetic operators

Java operation	Operator	Algebraic expression	Java expression
Addition	+	f + 7	f + 7
Subtraction	−	p − c	p − c
Multiplication	*	bm	b * m
Division	/	x/y or $\frac{x}{y}$ or x ÷ y	x / y
Remainder	%	r mod s	r % S

Integer ...