A+ Assignment Statements

• In General

• Variables are Integers or floating point numbers

• They are assigned the value of expressions which are evaluated to a numeric value.

• Floating Points are expressed with any of the letters except x which is reserved for other puproses

• Integers are a $ followed by any of the letter of the alphabet

• X is reserved as a macro character to represent values to be plugged in by the interpreter for algebreic functions.

• XML

• assignment::= variable "=" expression.

• variable::=float | integer.

• float::=”a”..”w” | “y”..”z”.

• integer::=$”a”..”z”.

• expression::=(O(sign)operand operator O(sign)operand) | O(sign) operand.

• operand::= expression | variable | constant | function operand | calcfunction | sum | product.

• sign::= "+" | "-".

• operator::= sign | "*" | "/" | relation | bitwise | “[“ | “~”.

• relation::="<" | ">" | "<=" | ">=" | "<>" | "==" | “||” | “&&”.

• bitwise::=”&” | “^” | “|”.

• function::= trig | unitconversion | logarithmic | exponential | “ABS” | “FACT”.

• algebraexpression::= (O(sign)algebraoperand operator O(sign)algebraoperand).

• algebraoperand::= “X” | algebraexpression | variable | constant | function algebraoperand | calcfunction | sum | product.

Notes: