0
What else can I help you with?
What is the reference type and value type?
In C#, a reference type [of object] is an object created from a class, a value type is an object created from a struct. 2 value type of objects are identical if their value/state are the same, while reference type are identical only if their storage address are the same. In C#, unless you can look at the definition of an object, usually you don't know the object is a value type or reference type. public struct MyThing {} public class Toy {} MyThing cat = new MyThing(); MyThing dog = new MyThing(); Console.WriteLine(cat yours); // False
What is array in C languange?
An array is a contiguous block of data in memory. When you declare an array in C you need to give it a type and a name (like a normal variable), plus you need to give it a size. // normal integer variable x int x; // array of 10 integers int x[10]; Remember that the variable x is actually just a pointer, or reference, to a point in memory. This point in memory is the start of the array, so the value at x[0] is the first value in the array, x[1] is the second, and so on. Also remember that C has no bounds checking, so you can, indeed, read any value past the maximum. x[3474] would return an integer value, but it's going to be some part of memory that is not in your array. Attempting to change this value could result in something very bad happening.
How get value integer type in GUI box?
In C#, a reference type [of object] is an object created from a class, a value type is an object created from a struct. value type of objects are identical if their value/state are the same, while...
Does mentioning the array name gives the base address in all the contexts?
Mentioning the array name in C or C++ gives the base address in all contexts except one. Syntactically, the compiler treats the array name as a pointer to the first element. You can reference elements using array syntax, a[n], or using pointer syntax, *(a+n), and you can even mix the usages within an expression. When you pass an array name as a function argument, you are passing the "value of the pointer", which means that you are implicitly passing the array by reference, even though all parameters in functions are "call by value". There is, however, one very important distinction. While an array name is referentially the same as a pointer, it is not a pointer in that it does not occupy program referential space in the process. This means that, while you can change the value of a pointer, and thus the address to which it points, you can not change the value of an array name. This distinction is what we call R-Value (array or pointer) as opposed to L-Value (pointer only), i.e. can the object appear on the left sign of an assignment operator.
How do you pass an array as a parameter?
AnswerUnfortunately your question is to broad. All progamming languages vary in the way things are done. I will just give a general way of doing it.You have to pass the multidimensional array into the function by including it with calling the function. On the receiving end you have to declare another multidimensional array so the information can be passed into it. Depending on the language, you may not be passing in a multidimensional array, instead that array may be stored in an object which you can pass instead.Hope this helps some.-Ashat-in C, when passing two dimensional arrays the compiler needs to know the width so it can calculate memory offsets.passing a 2d array of width 4:voidFunc(type array[][4]);
What is meant by value type and reference type in c?
When you work with passing by value C creates a copy of the variable which is referencing to. Thus, it spends free RAM space just to dublicate the variable which already excists.When you work with passing by reference type C works with address of the variable, what makes using of free RAM space more efficient.
What are the different parameter passing methods used by c plus plus?
Pass by value, constant value, reference and constant reference. Pass by value is the default in C++ (pass by reference is the default in Java).
How do you combine call by value and call by reference programs in c?
Very easily: there is no call-by-reference in C.
What is the relationship between the value of the subscript and the value of the array element in c?
You can access the array-element via index (or subscript), but it is not possible the other way around.
Why cannot arrays be passed by values to procedure?
Because C does not have procedures. Because in Java only elementary types (int, double, etc) are passed by-value, objects (array included) by-reference.
Can an array be passed from a function to the calling portion of the program via a return statement?
It depends on the language, but in most cases yes, you can return arrays to callers via the return statement. In C, arrays can be returned from a function by reference (that is, by pointer) but never by value (arrays cannot be copied automatically). The array must be allocated on the heap, never on the stack (you cannot return references to local variables). However, beware that returning arrays by reference is unsafe because there's no way to determine the upper bound of the array. This is why many C library functions return multiple values through output parameters and use the return value to indicate error conditions. One way to return both the array and its size via a return statement is by returning a structure: struct array_info { void* array_ptr; /* pointer to first element in array */ int size; /* number of elements in the array */ }; Obviously you must cast the array_ptr member to the appropriate type before dereferencing any of the array elements. In C++, C-style arrays work just as they do in C. However, the preferred method is to use a vector rather than a C-style array. A vector is a class template that encapsulates a C-style array with size and reserve, along with a rich set of useful functions (as with all templates, you don't pay for what you don't use). Vectors can be returned from functions both by value and by reference. Vectors also support move semantics making it possible to return vectors allocated on the stack as well as on the heap. C++ also supports an array class template. This is specifically for fixed-size arrays but is otherwise similar to a vector.
What is meant by value type and reference type in?
When you work with passing by value C creates a copy of the variable which is referencing to. Thus, it spends free RAM space just to dublicate the variable which already excists.When you work with passing by reference type C works with address of the variable, what makes using of free RAM space more efficient.
