Subroutine in the programming
Describe the number of ways that an argument is passed to a subroutine in the programming?
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The argument can be passed in two ways in the programming language. They are Pass by Value and Passing by Reference.
Passing by value: This process copies the value of an argument to the formal parameter of the subroutine.
Passing by reference: In this process, a reference to an argument (not the value of argument) is passed to the parameter.
Propagation: When an exception is thrown in a method, and there is no suitable exception handler within the method, the exception might be propagated to the caller of the method. For a checked exception, the method should include a throws clause in it
Explain the major elements of the ADO object model and it’s used?
Passing by value: In this process separate memory builds for formal arguments and when any modifications done on formal variables, it will not influence the real variables. Therefore actual variables are preserved in this situation.
Catching exceptions: Exceptions are caught in the catch clause of the try statement. Catching an exception provides the program a chance to recover from the trouble or attempt a repair for whatsoever caused it.
Passing by address or reference: In this technique no separate memory build for formal variables that is, formal variables share similar location of actual variables and therefore any change on formal variables automatically reflected back to real var
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