Program statements and constructs are the basic building blocks of any program. The document outlines common statements like input, assignment, output, and conditional control statements. Input statements like READ and INPUT accept user input and store it in a variable. Assignment statements like LET and variable = expression store the result of an expression in a variable. Output statements like PRINT and WRITE display the contents of variables. Conditional statements like IF-THEN-ENDIF only execute statements if a condition is true.

1. Program Statements and Constructs
A statement is the basic building block of a program and has to be constructed using the
strict syntax (guide lines and rules) of the programming language being used. Below is a
table of common programming statements and constructs:
Input
Syntax: READ <Variable> or INPUT <Variable>
Description: Accept input from users and store in the variable (eg. Memory)
Example: READ firstname or INPUT firstname
Results: allows the user to type in a name and stores this in memory with the variable name
firstname
Assignment (storage)
Syntax: LET <variable> = <expression>
Or <variable> = <expression>
Description: stores the results of the expression in the variable that is memory.
Example : LET firstname = ‘jackie’ or firstname = ‘jackie’
Result: stores the value Jackie in memory with the variable firstname.
Output
Syntax: PRINT <variable1>,<variable2>
OR
WRITE <variable1>,<variable2>
Description: Outputs contents of all the listed variables to the printer.
Example: PRINT firstname or WRITE firstname
Prints:Jackie
Control –Conditional
Syntax: IF <condition > THEN <statements>

2. ENDIF
Description: Executes the statements only if the condition is true
Example: IF age>17 THEN
PRINT ‘Adult’
ENDIF
Results: Prints the word Adult only if the value stored in the variable age is greater than 17