Tuto WINDEV 25

Part 2: The WLanguage basics 57 Overview WLanguage is a set of statements used to handle data. The conditional statements are used to compare variables and/or values between themselves in order to perform different processes. Several conditional statements are available: • IF... THEN... ELSE... END • SWITCH... The IF and SWITCH statements The IF statement This statement is used to run an action or another one according to the result of an expression. If the expression is checked, a process is run ; if the expression is not checked, another process can be started. The IF statement can be used as follows: IF <Expression to check> THEN Process to run if the expression is checked ELSE Process to run otherwise END WLanguage code example: The following code selects a number at random and displays a message according to the value. Tot is Currency // Selects a number at random between 100 and 4000 Tot = Random(100, 4000) IF Tot>2000 THEN Info("The amount is greater than 2000") ELSE Info("The amount is less than or equal to 2000") END In this case, the expression to check corresponds to "Tot>2000". Remark: Several code lines can be run during the process corresponding to a condition. In this case, the following syntax must be used: IF <Expression to check> THEN Code line 1 Code line N ELSE Code line 1 Code line N END