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Why pointer variable sometimes desirable to pass a pointer to a function as an argument?
Frequently, a called function needs to make changes to objects declared in the calling function. For example, the function, scan(), needs to access objects in the calling function to store the data read and converted into an object defined there. Therefore, we supply scan() with the address of objects rather than their values.
Another common use of pointers is to write functions that ''return'' more than one value. As we have seen, every function in C returns a value as the value of the function; however, if a function's meaning includes the return of several pieces of information, this single return value is not sufficient. In these cases, we can have the function return multiple data values indirectly, using pointers.
What are the different parameter passing mechanisms to a function? The different parameter-passing mechanisms are given below: 1. Call by value 2. Call by value-resu
What is the window of the working set of a process? The window of the working set of a method is the total number in which the method had referred the set of pages in the work
Q. Illustrate basic working of Physical layer? Physical layer: Physical layer is concerned with sending raw bits between source and destination nodes over a physical medium.
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What is branch instruction? As a result of branch instruction is a type of instruction which loads a latest values into the program counter.
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