A function is used in an expression to call a predetermined operation to be performed in an operand They must be used in conjunction with either a statement or a command Examples are shown in table below Functions Meaning SIN (x) The sign of x Cos (x + y) The cosine of the addition of …
They perform test on multiple relations, bit multiplication or Boolean operators and return a true (non-zero or false zero) value to be used in making decision Table 12.5 shows logical operators and their meanings. below are relational operators and their meaning Operator Operations NOT : Logical Complement AND : Conjunction OR : Disjunction (inclusive OR) …
They are used to compare two values. Their functions are shown in the table below Operator Relation tested Example = Equality X = Y < > Inequality X<> Y < Less than X < Y > Greater than X > Y < = Less than or equal to X< = Y > = Greater than …
They are used in solving arithmetic’s / mathematics. Table arithmetic operations + Addition A = A + B A = A + B – Subtraction A = A-B A = A –B * Multiplication Y = 2* X Y = 2x / Division T = X*Y T = xy/ ^ or ** Exponentiation Y= X*B^2 …
An expression is a rule for computing a value. Expressions in BASIC are classified into five main categories namely: 1. Arithmetic operation 2. Relational symbols / logic operations 3. Functional operators 4. Punctuation mark 5. Keywords
It is a computer instruction given to the computer defining what action or processing is to be carried out on data. It comprises of expression, assignments and reserved words. Examples are A = 27.57 ‘assignment statement.