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Disadvantages and Advantages of Using Global Variables
The disadvantages of using global variables is that it has a lack of access control which can hinder security when working with 3rd party plug –ins. Global variables can have unlimited mutual dependencies which can make the program complexed according and integrating modules can also be difficult because other software written may use the same global variable names and your intentions were to use a local variable, creating name – space pollution. For example, if you are using a module and have to link it with another module, you will get linking errors because there are multiples of the same global name and it may not be thread safe. (Wiki.com). Global variables can be modified or read in any part of the program making it difficult to remember its use, according to Wiki.com/c2.
The advantages of using global variables is that they are accessible anywhere in the program, they are declared at the beginning of the program by a global command and you can call them anywhere in the code. Use global variables in a public static field so it can be called anywhere in the programming and it will clog name space usage, (programmer.stachexchange.com). Common data can be declared global so you don’t have to use parameter passing. And because you can use it anywhere, use encapsulation to avoid corruption in the program, (yahoo.com).
Global variables are in the assignment window while local variables are in the input box is how global and local variables are declared in a flowchart. In pseudocode, global variables are declared outside a construct or a box, while a local variable is declared inside a construct or a…...

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