Why do we use void as it is returning nothing?

The void functions are called void because they do not return anything. “A void function cannot return anything” this statement is not always true. From a void function, we cannot return any values, but we can return something other than values.

Why do we use void in function?

When used as a function return type, the void keyword specifies that the function doesn’t return a value. When used for a function’s parameter list, void specifies that the function takes no parameters.

What is the return type of a function that doesn’t return anything?

void
When a function does not return a value, void is the type specifier in the function declaration and definition.

What happens if you return in a void function?

When a return statement contains an expression in functions that have a void return type, the compiler generates a warning, and the expression isn’t evaluated.

What does return void mean?

Void basically means that the method will not return anything. Nothing is returned in this method, because it is setting something, but there is no need to send anything back, so we use void on the method declaration.

What does a void function return in Python?

In Python, it is possible to compose a function without a return statement. Functions like this are called void, and they return None, Python’s special object for “nothing”.

What do void methods return?

Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so.

Is void return type?

In lieu of a data type, void functions use the keyword “void.” A void function performs a task, and then control returns back to the caller–but, it does not return a value. You may or may not use the return statement, as there is no return value.

What does a void return type mean in Java?

A void return type simply means nothing is returned. System. out. println does not return anything as it simply prints out the string passed to it as a parameter.

Does void return anything Java?

Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so. The data type of the return value must match the method’s declared return type; you can’t return an integer value from a method declared to return a boolean.

What happens if the return type of a function is void?

As for the return statement in a function that has return type void then if it is the last statement of the function then usually it is omitted. Using the last return statement can only confuse the reader of the code because he has to be sure that the absence of an expression in the return statement is not a typo.

What is a non-value-returning function?

Void (NonValue-Returning) functions: Void functions are created and used just like value-returning functions except they do not return a value after the function executes. In lieu of a data type, void functions use the keyword “void.”. A void function performs a task, and then control returns back to the caller–but, it does not return a value.

Why can’t I call a void function with arguments?

The omission of void in parameters means that the function takes any number of arguments: Now compiling it with gcc -std=c11 -Wall -pedantic test.c, you get errors from func2 only: That is, it is not a compile time error with GCC to call void func (); with arguments, while it is compile time error to call void func2 (void) with arguments.

What can I do with a void function in C++?

A good utilization of a void function would be to print a header/footer to a screen or file. Remember: there are two kinds of subprograms that the C++ language utilizes: value-returning functions and void functions.