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result
Tristan Hume edited this page Apr 23, 2012
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#result
##Syntax A resultStatement is:
result expn
##Description A result statement, which must appear only in a function, is used to provide the value of the function.
##Example This function doubles its parameter.
function double ( x : real ) : real
result 2 * x
end double
put double ( 5.3 ) % This outputs 10.6
##Example This function finds the position of a name in a list.
function find ( a : array 1 .. 100 of string ) : int
for i : 1 .. 100
if a ( i ) = name then
result i
end if
end for
end find
##Details The execution of a result statement computes the value of the expression (expn) and terminates the function, returning the value as the value of the function.
The expression must be assignable to the result type of the function, for example, in double, 2*x is assignable to real. (See the assignmentStatement for the definition of assignable.)
A function must terminate by executing a result statement and not by reaching the end of the function.