What is a void in programming?
What is a void in programming?
The void type, in several programming languages derived from C and Algol68, is the type for the result of a function that returns normally, but does not provide a result value to its caller. Usually such functions are called for their side effects, such as performing some task or writing to their output parameters.
What does void * mean in C++?
no return value
Functions that do not return a value. Most commonly, void is used to indicate that a function does not return a value: void writeValue(int x) // void here means no return value { std::cout << “The value of x is: ” << x << ‘\n’; // no return statement, because this function doesn’t return a value }
What is void in C++ with example?
In such situations, we can use the pointer to void (void pointers) in C++. For example, // void pointer void *ptr; double d = 9.0; // valid code ptr = &d The void pointer is a generic pointer that is used when we don’t know the data type of the variable that the pointer points to.
What is a void function example?
Functions like this are called void, and they return None, Python’s special object for “nothing”. Here’s an example of a void function: >>> def sayhello(who): print ‘Hello,’, who + ‘!’ print ‘What a lovely day.
What void means in Java?
should not have a return value
The void keyword specifies that a method should not have a return value.
What is a void data type?
void data type. A data type that has no values or operators and is used to represent nothing.
What is void in Java?
The void keyword specifies that a method should not have a return value.
Why do we use void in C programming?
In computer programming, when void is used as a function return type, it indicates that the function does not return a value. When void appears in a pointer declaration, it specifies that the pointer is universal. When used in a function’s parameter list, void indicates that the function takes no parameters.
What is a void method C#?
The void keyword is used in method signatures to declare a method that does not return a value. A method declared with the void return type cannot provide any arguments to any return statements they contain.
