Is the return statement mandatory in C?

As a good engineering practice, always specify a return type for your functions. If a return value isn’t required, declare the function to have void return type. If a return type isn’t specified, the C compiler assumes a default return type of int . In a main function, the return statement and expression are optional.

What is the necessity of the return statement in C language?

The return statement terminates the execution of a function and returns control to the calling function. Execution resumes in the calling function at the point immediately following the call. A return statement can also return a value to the calling function.

Do All methods need return statements?

You declare a method’s return type in its method declaration. Within the body of the method, you use the return statement to return the value. Any method declared void doesn’t return a value. It does not need to contain a return statement, but it may do so.

What is the difference between return and void?

Example: difference between void and return method in java Difference between void and return method Void Method: The “void” return type means that this method doesn’t have a return type. It is mostly used for printing result to console Return Method: This other method on the other hand, returns a String.

What does return 2 means in C?

In your case, it appears that the statements are taken from the body of a function returning an int (or a related type convertible from int ). So, return 2 simply returns the value 2. Thus, if you have.

Is return required in function?

A function can have multiple return statements that end the function and return a value. In a void function the return statement can be used to end the function execution early, otherwise there is no need for a return statement in a void function.

What is a return statement in C?

A return statement terminates execution of the current function and returns control to its caller. A function may have any number of return statements. Any here is taken to mean that both functions returning a value or functions that do not return a value (returning void) are allowed to have no return statements.

Can the return statement be omitted from a function returning void?

As for the return statement, it can be omitted from a function returning void, if it is the last statement. Return has 2 uses – terminate the execution of the function and specify the value returned to a caller. A return statement terminates execution of the current function and returns control to its caller.

How many return statements can a function have?

A function may have any number of return statements. Any here is taken to mean that both functions returning a value or functions that do not return a value (returning void) are allowed to have no return statements. Thus omitting a return statement is undefined behaviour if the function returns a value (not void ), and the caller uses the value.

What are the prerequisites for return statement in C++?

Pre-requisite: Functions in C/C++. The return statement returns the flow of the execution to the function from where it is called. This statement does not mandatorily need any conditional statements. As soon as the statement is executed, the flow of the program stops immediately and return the control from where it was called.