Which of the following method duplicates the address of an argument into the formal parameter?a.Call by Valueb.Call by referencec.Return Typed.Parameter
Question
Which of the following method duplicates the address of an argument into the formal parameter?
a. Call by Value
b. Call by reference
c. Return Typed.Parameter
Solution
The method that duplicates the address of an argument into the formal parameter is b. Call by Reference.
Here's a step by step explanation:
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In programming, when we pass parameters to a function, there are two methods: Call by Value and Call by Reference.
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Call by Value: In this method, the value of each of the actual parameters (arguments) in the calling function is copied into corresponding formal parameters of the called function. In this case, changes made to the parameter inside the function have no effect on the argument.
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Call by Reference: In this method, the address of the actual parameters (arguments) in the calling function is copied into the formal parameters of the called function. This means that changes made to the parameter affect the argument.
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Therefore, the method that duplicates the address of an argument into the formal parameter is Call by Reference.
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Return Type and Parameter are not methods of passing arguments to a function, so they are not correct answers to this question.
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