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 Related Questions 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 : I have some doubts. 1) As you said the page size is generally 4KB or 8KB. What factors decides the page size? Is it the kernal or what? 2) As per I understand the total RAM available is called the physical memory, and the memory which you map to your ... Latest Answer : a const pointer means the pointer which represents the address of one value. so if you declare a pointer inside the function, it doesn't have scope outside the function. if it is also available to the outside function whenever we declare a pointer as ... Tags : Pointer 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 Yes. The const modifier means that this code cannot change the value of the variable, but that does not mean that the value cannot be changed by means outside this code. For instance, in the example in Latest Answer : But isnt like the constant variables will be stored by in ROM (read only memory).Then how can the some process other than the code can change the value of const volatile ... There are two situations in which to use a type cast. The first use is to change the type of an operand to an arithmetic operation so that the operation will be performed properly. The second case Latest Answer : Type cast should be used in case of if we want to assign a void pointer to a pointer of some data type.eg:void *ptr;int *c;c=(int *)ptr; ... 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. ... Declaring a variable means describing its type to the compiler but not allocating any space for it. Defining a variable means declaring it and also allocating space to hold the variable. You can also Latest Answer : int num;This statement is declaration and also defination since it also allocates memory for variable num.But when you use following statementextern int num;It is only declaration since you are not allocating memory here. ... 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 answer is the standard library function qsort(). It’s the easiest sort by far for several reasons: It is already written. It is already debugged. It has been optimized as much as possible (usually). Latest Answer : Greetings!can u plz explain me the sorting function with its implementation in a small program and send it to my e-mail Id : venki_m182003@yahoo.com ... The answer depends on what you mean by quickest. For most sorting problems, it just doesn’t matter how quick the sort is because it is done infrequently or other operations take significantly more Latest Answer : The algorithms which follows divide and qunquer technique provides fastest implementation. ...
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