program control statement executes a statement based on the value of one or more other variables, combining if
statements with the power of recode
. The statement is similar to statements in other programming languages (like switch
in C or when
One or more expressions, expression1
, are given, with each expression separated by two colons ::
. These expressions must evaluate to either a number or string. Based on the values of each expression, CSPro evaluates each line between the when
, trying to match a line's values, value1
, with the evaluated expressions. Once a line matches, a statement, which is given after the arrow ->
, is executed and program control moves to statements following the endwhen
. Only a single statement can be provided per line.
Each value provided must evaluate to the same type (number or string) as its respective expression. A value omitted is considered a match, and if no values are provided, then the optional else_statement is executed (assuming no preceding line matched).