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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.
Need of CISC CPU - computer architecture: Why is Intel spending money and time to manufacture the Pentium II and the Pentium III? The answer of this question is simple, ba
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Unions allow the same area of memory to be accessed as different data types. The insurance example above would not work. Unions are useful (often in embedded programming) when i
Drawbacks to having call centres overseas - Culture and language problems - Animosity to overseas call centres (resulting in loss of customers) - need for extensive r
Which one state is not a fundamental process state? Ans. Blocked state is not a fundamental process state.
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state and prove distributive law?
What is the difference between wire and reg? Net types: (wire,tri)Physical connection between structural elements. Value assigned by a continuous assignment or a gate output.
Level of any node of a tree is :- Its distance from the root
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