After completing this lesson, student must be able to:
QBASIC is the most popular high level programming language. A quantity in a computer program which does not change its value during the execution of the program is called a constant. This note elaborates on structures, constants and variables of Qbasic.
Logical operators are used to connect two or more relations and return a TRUE or FALSE value to be used in a decision. This note contains further elaboration on arithmetic, relational or logical expression.