The permissible combinations of variables, numeric literals, arithmetic operator and parentheses are given in TableĀ 1.
Table 1. Combination Of Symbols In Arithmetic Expressions
First Symbol |
Second Symbol |
Variable |
* / ** + - B-AND B-OR B-XOR B-EXOR |
Unary + - B-NOT |
( |
) |
Variable |
- |
P |
- |
- |
P |
* / ** + - B-AND B-OR B-XOR B-EXOR |
P |
- |
P |
P |
- |
Unary + - B-NOT |
P |
- |
- |
P |
- |
( |
P |
- |
P |
P |
- |
) |
- |
P |
- |
- |
P |
P |
indicates a permissible pair of symbols |
- |
indicates an invalid pair |
Variable |
indicates an identifier or literal |