User's Manual

HARSFEN0602
exits, the value of the automatic variables is not saved.
Automatic variable cannot be a vector.
Example: In the example of the STATISTIC function, variable k is the automatic variable
5.6.5 Global variables
A function can refer a persistent variable. In this case the referred persistent variable must be
declared global inside function and must be defined above function definition. The global
keyword is obligatory; otherwise the variable will be referred as an automatic variable of the
function.
The dimension of a persistent variable is defined once a program during its definition and
the same for this global variable in all functions where it is used. The legal way to declare
the dimension of a persistent variable inside function is empty square brackets after its name
or absence any brackets.
Example: In the example of the STATISTIC function, variable vec[11] is the global
variable. It is defined above the function definition and inside the function body it is
redeclared as global.
float temp; Declare the global vector variable
int vec[10] ; Declare the global vector variable
…
function [float a]=func(int b ) Declaration of a function func
float temp ; Declare temp as an automatic variable,
because the global keyword is absent.
… Function body
return The end of the function
…
function [float a]=func1(float temp ) Declaration of a function func1. In this case
temp is not global variable, but an input
argument.
…
return The end of the function
…
function [float a]=func2(float b ) Declaration of a function fun2.
global float temp ; Redeclaration of the global variable temp. In
this function temp is the global variable.
global int vec[] ; Redeclaration of the global variable vec.
Notice that its dimension is omitted during
redeclaration and its actual dimension is 10 as
it is defined above.
5.6.6 Jumps
Syntax:
goto ##LABEL1
The jump (goto) command instructs the program to continue its execution at the label
specified by the jump command.