GLOBAL VARIABLE :HOW USE IT?
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hi, i want to use it in a function..example:
function CaricaManageInstrument()
global dd
dd=5;
end
>> CaricaManageInstrument()
>> dd
Unrecognized function or variable 'dd'.
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Risposte (3)
Walter Roberson
il 30 Mag 2023
Global variables are only reachable within the current workspace. Consider the following code:
first(); second(); third();
function first
global a
a = 'set by first';
end
function second
a = 'set by second';
end
function third
global a
a
end
The result is not 'set by second' because for global variables, the connection between the name and the global variable is only made in workspaces that "opt in" to the connection by explicitly declaring the variable global.
Your function CaricaManageInstrument opts in to connecting "dd" to the global variable, but once you have returned to the base workspace (the command line), the base workspace has not opted into the connection between the name and the global variable.
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