A goto statement implements a local jump of program execution, and the longjmp() and setjmp() functions implement a nonlocal, or far, jump of program execution. Generally, a jump in execution of any kind
Latest Answer : using the normal goto statement we can move only within the function. it is not possible to go from one function to another function.using setjmp and longjmp you can move from one function to another function. but it is very bad programming. since the ...
Some operating systems (such as UNIX or Windows in enhanced mode) use virtual memory. Virtual memory is a technique for making a machine behave as if it had more memory than it really has, by using disk
Latest Answer : Page size you have to choose as per the requirement. If you choose page size big then processing of page fault takes more time but if you choose page size small then there is possibility that more number of page fault occures but processing time of page ...
The register modifier hints to the compiler that the variable will be heavily used and should be kept in the CPU’s registers, if possible, so that it can be accessed faster. There are several restrictions
Latest Answer : If a variable is defined by using register modifier it tells to the compiler that the variable is used repetedly and that variable executes fastly. Generally register variables are defined in loop counters. This variable stored in CPU registers and access ...
The volatile modifier is a directive to the compiler’s optimizer that operations involving this variable should not be optimized in certain ways. There are two special cases in which use of the
Floating-point numbers are the “black art” of computer programming. One reason why this is so is that there is no optimal way to represent an arbitrary number. The Institute of Electrical
Latest Answer : A program running in the database that can take complex actions based on the inputs you send it. Using a stored procedure is faster than doing the same work on a client, because the program runs right inside the database server. ...
A type cast should not be used to override a const or volatile declaration. Overriding these type modifiers can cause the program to fail to run correctly. A type cast should not be used to turn a pointer
Latest Answer : we should not cast the big datatype to smaller one. Like from double to float long to integer. TIn these cases there will be chance of loosing the valuable data itself. ...
A global variable that must be accessed from more than one file can and should be declared in a header file. In addition, such a variable must be defined in one source file. Variables should not be defined
Latest Answer : A variable can be declare/define in a C Header without any kind of compilational/ logical errors. But it is against the coding specifications and it is not normally practiced. If proper Multiple inclusion protection macro is used, then there will be no ...
You can’t declare a static variable without defining it as well (this is because the storage class modifiers static and extern are mutually exclusive). A static variable can be defined in a header
Latest Answer : In CThe scope of static variable is file. ie., if declared the variable is accessible accross the file.When declared the vairable in a header then its exposed to where ever its included. Every file will have a local copy. You need to extern ...
The benefit of using the const keyword is that the compiler might be able to make optimizations based on the knowledge that the value of the variable will not change. In addition, the compiler will try
Latest Answer : A side effect benefit:Say you want to pass an argument that you do not want modified, but you do not want to pass by value.Solution pass as constant reference or pointer constant.int someFoo(myDataType const &chunkOfData);orint ...
A sorting program that sorts items that are on secondary storage (disk or tape) rather than primary storage (memory) is called an external sort. Exactly how to sort large data depends on what is meant
Latest Answer : Any how after merging that it will create the same problem to sort out. Will you please explain about that? ...
