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3.7.4 Names in procedures
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All variables defined inside a procedure are local to the procedure and their
names cannot interfere with names in other procedures. Without further action,
they are automatically deleted after leaving the procedure.
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To keep local variables and their value after leaving the procedure, they have
to be exported (i.e. made global) by a command like
export or
exportto (see export,see exportto, see importfrom;
see package). To return the value of a local variable, use the
return command (see return).
Example:
| proc xxx
{
int k=4; //defines a local variable k
int result=k+2;
export(result); //defines the global variable "result".
}
xxx();
listvar(all);
==> // result [0] int 6
| Note that the variable result became a global variable after the
execution of xxx .
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