Do non-void functions need a return statement?

11 Answers. C99 and C++ standards don’t require functions to return a value. The missing return statement in a value-returning function will be defined (to return 0 ) only in the main function.

Does a void function return a value?

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.

Why void does not return any value?

Void functions are created and used just like value-returning functions except they do not return a value after the function executes. You may or may not use the return statement, as there is no return value. Even without the return statement, control will return to the caller automatically at the end of the function.

Does a non-void method return a result?

Since a non-void method always returns a value, this value has to be stored in a variable, printed, or returned to a Java control structure or another method. Here are some examples. The method call can be in an assignment statement. The method call can be in a print or println statement.

What is a non-void function?

Calling a non-void function tells the computer to head over to the function definition, do everything, and come back with the result once it’s done. This is nice if we’re doing complicated math or trying to combine a bunch of data in some way.

What is the difference between void and non-void function?

Answer: The way that a non-void method is called differs from the way that a void method is called in that the call is made from within other Java statements. Since a non-void method always returns a value, this value has to be stored in a variable, printed, or returned to a Java control structure or another method.

Can’t return a value from a void function?

A void function cannot return any values. But we can use the return statement. It indicates that the function is terminated. It increases the readability of code.

Why do constructors not return values?

So the reason the constructor doesn’t return a value is because it’s not called directly by your code, it’s called by the memory allocation and object initialization code in the runtime. Its return value (if it actually has one when compiled down to machine code) is opaque to the user – therefore, you can’t specify it.

Does void return anything?

The void functions are called void because they do not return anything. From a void function, we cannot return any values, but we can return something other than values.

What is the purpose of void?

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

What is a non-void?

Nonvoid meaning (computing, mathematics) Not void. adjective.

What should the value of the non-void function return?

V591. Non-void function should return a value. Message submitted. Your message has been sent. We will email you at check your Spam/Junk folder and click the “Not Spam” button for our message. This way, you won’t miss messages from our team in the future.

Can a return statement with an expression appear in a void?

A return statement with an expression shall not appear in a function whose return type is void . A return statement with an expression shall not appear in a function whose return type is void. A return statement without an expression shall only appear in a function whose return type is void.

Is there a warning for return with no value?

warning : ‘return’ with no value, in function returning non-void. A return with no value is similar to what I showed. The message also tells you that if the function returns ‘void’, it would not give the warning. But because the function is supposed to return a value but your ‘return’ statement didn’t, you have a problem.

Can a function return an INT with no value?

This is often indicative of ancient code. In the days before the C89 standard, compilers did not necessarily support ‘void’. The accepted style was then: Technically, the function returns an int, but no value was expected.

Do non-void functions need a return statement? 11 Answers. C99 and C++ standards don’t require functions to return a value. The missing return statement in a value-returning function will be defined (to return 0 ) only in the main function. Does a void function return a value? Any method declared void doesn’t return a value.…