11.3) Conditional Logic And Relational Statements
- Conditional logic is the use of true and false statements
- Logicals are a data type whose values are true (1) or false (0) and are of the Boolean class
- Logical expression are either right or wrong
- Relational operations make the comparison. The main ones are:
- Thinking in terms of numbers, the basic comparison is like "is 3 less than 4", "is 9 greater than 11" and "is 4 equal to 2+2"
- Relation statements (a>b) result in a logical expression (1 or 0)
- Relational statements can be combined with the following logical operators
- For clarity, relational statements are best enclosed in parenthesis
| == | Is equal to |
| > | Is greater than |
| < | Is less than |
| ~= | Is not equal to |
| >= | Is greater than or equal to |
| <= | Is less than or equal to |
| & | and |
| | | or |