Why can't void function be assigned a value in c++?

In C, the void function cannot be assigned for the following reasons: type mismatch: the void function has no return value, the type is void, and is incompatible with the assignment operator operand type. The essence of function pointers: The void function has no return address, making it impossible to store it in the function pointer, causing the assignment to be invalid. Avoid confusion: prohibiting assignment prevents the mistaken belief that void functions can return values. Keep it simple: disabling assignment simplifies the language and improves consistency and readability.

The reason why the void function cannot be assigned a value in c

In C, the void function cannot be assigned a value. This is because The following reasons:

Type mismatch

• void The function has no return value, so its type is void.
• Assignment operators require operands to be of the same type.
• Since void is a special type, it is not compatible with any other type.

The essence of function pointers

• The function pointer points to the address of the function code.
• void function has no return value, so it has no return address.
• This prevents the void function pointer from storing a valid address, causing the assignment operation to be invalid.

Avoid confusion

• Allowing assignments to void functions may cause confusion because it may give people the wrong impression that A void function can return a value.
• Disallowing assignment to void functions helps avoid such confusion.

Keep the language simple

• Disallowing assignment to void functions makes the C language simpler because it eliminates the need for this operation .
• This helps keep the language consistent and readable.

The above is the detailed content of Why can't void function be assigned a value in c++?. For more information, please follow other related articles on the PHP Chinese website!