Can we write function without return type?

If no return statement appears in a function definition, control automatically returns to the calling function after the last statement of the called function is executed. In this case, the return value of the called function is undefined.

Is it necessary to have a return statement in a function?

For a function of return type void , a return statement is not strictly necessary. If the end of such a function is reached without encountering a return statement, control is passed to the caller as if a return statement without an expression were encountered.

Is return type necessary?

Every method in Java is declared with a return type and it is mandatory for all java methods. A return type may be a primitive type like int, float, double, a reference type or void type(returns nothing). The type of data returned by a method must be compatible with the return type specified by the method.

Does function have return type?

The result of a function is called its return value and the data type of the return value is called the return type. Every function declaration and definition must specify a return type, whether or not it actually returns a value. The user-defined type may also be defined within the function declaration.

Is it possible to write a function without specifying no return type if so justify your answer?

3 Answers. If you do not specify a return type or parameter type, C will implicitly declare it as int . The function declaration syntax was used in older versions of C, and is still valid, so the code fragment “workover(i) int i;” is equivalent to “workover(int i)”.

Does return type void?

______________ have the return type void. Explanation: Constructor creates an Object and Destructor destroys the object. They are not supposed to return anything, not even void. Explanation: void fundamental type is used in the cases of a and c.

When should I use return?

return is used to send a value back to where’s it’s called from. You use it if you want to return a value. If you don’t have a return statement, it’s the same as return undefined .

Can we use return in if statement?

Yes. The return here will take the control out of method. The return here is probably used in order to “improve” the performance of the method, so that other comparisons are not executed, once the needed scenario is performed. However, it’s not good practice to have multiple return points in a method.

Why do we use return type before Main?

It is also used to indicate, why the program is crashed (after a program terminates, the return code is stored by the OS). Success => return 0; any other value indicates an error. (If you have void main() -> the return code is always 0 = success.

What is a return type method?

In computer programming, the return type (or result type) defines and constrains the data type of the value returned from a subroutine or method. In many programming languages (especially statically-typed programming languages such as C, C++, Java) the return type must be explicitly specified when declaring a function.

How do you return a variable from a function?

To return a value from a function, you must include a return statement, followed by the value to be returned, before the function’s end statement. If you do not include a return statement or if you do not specify a value after the keyword return, the value returned by the function is unpredictable.

What has no 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.

Can We return a value in a void return type function?

But if the return statement tries to return a value in a void return type function, that will lead to errors. Methods returning a value: For methods that define a return type, the return statement must be immediately followed by the return value of that specified return type.

How do you return something from a function that does not return?

In modern C, functions that don’t return a result should be declared with a return type of “void” to state explicitly that they don’t return anything. In modern C, it’s illegal not to return something from a function with a non-void return type – and you can only do “return ;” from a void function.

Is it possible to skip the return statement in a function?

The return statement can be skipped only for void types. Not using return statement in void return type function: When a function does not return anything, the void return type is used.

What is the use of return statement in C?

As soon as the statement is executed, the flow of the program stops immediately and return the control from where it was called. The return statement may or may not return anything for a void function, but for a non-void function, a return value is must be returned. There are various ways to use return statements. Few are mentioned below: