What is the use of void data type in C?

What is the use of void data type in C?

Void is an empty data type that has no value. We use void data type in functions when we don’t want to return any value to the calling function. Example: void sum (int a, int b); – This function won’t return any value to the calling function.

Why void type is used?

Many programming languages need a data type to define the lack of return value to indicate that nothing is being returned. The void data type is typically used in the definition and prototyping of functions to indicate that either nothing is being passed in and/or nothing is being returned.

Is void a keyword in C?

void. The void keyword meaning nothing or no value. Here, the testFunction() function cannot return a value because its return type is void.

Is void a variable in C?

A void pointer is nothing but a pointer variable declared using the reserved word in C ‘void’. When a pointer variable is declared using keyword void – it becomes a general purpose pointer variable. Address of any variable of any data type (char, int, float etc.) can be assigned to a void pointer variable.

Does C have void?

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….In C and C++

C C++ equivalent
void f(void); void f(); (preferred) void f(void);

Is void a type?

Yes, void is a type. Whether it’s a data type depends on how you define that term; the C standard doesn’t. The standard does define the term “object type”.

Is void data type?

Void is considered a data type (for organizational purposes), but it is basically a keyword to use as a placeholder where you would put a data type, to represent “no data”.

What is the benefit of void pointer?

Why we use void pointers? We use void pointers because of its reusability. Void pointers can store the object of any type, and we can retrieve the object of any type by using the indirection operator with proper typecasting.

What is main void in C?

int main() indicates that the main function can be called with any number of parameters or without any parameter. On the other hand, int main(void) indicates that the main function will be called without any parameter #include .h> int main() { static int i = 5; if (–i){ printf(“%d “, i); main(10); } }

What is void pointer?

A void pointer is a pointer that has no associated data type with it. A void pointer can hold address of any type and can be typecasted to any type.