Is return statement mandatory in C?

Is return statement mandatory in C?

It is never mandatory. If the function does not return a value, you need not use a return statement and can just let the function go on to the closing “ } ”.

Can a function have no return value?

Function with no argument and no return value : When a function has no arguments, it does not receive any data from the calling function. Similarly when it does not return a value, the calling function does not receive any data from the called function.

What if there is no return in function definition?

If no return type is specified, the function is declared to return a value of type int . A function can return a value of any type except “array of type” or “function returning type”. Pointers to arrays and functions can be returned. The value returned, if any, is specified by an expression in a return statement.

Does every function have to have a return statement?

Regardless of how long and complex your functions are, any function without an explicit return statement, or one with a return statement without a return value, will return None .

Why is the return statement not necessary when function is called by reference?

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.

Which function must not use a return statement Mcq?

Explanation: VOID functions should not return anything. RETURN; is returning nothing.

What value do functions that do not contain return statement return?

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.

When function does not return any value then function is declared as void?

If a function is not returning any values, then we use void as the return type. Void functions do not return a value after the function executes but they are used similarly like value-returning functions.

How do I fix no return statement in returning non void?

You must match the function prototype for the return type of the function with an actual return of an object of that type. If you have nothing to return, specify the function return type as void. C and C++ allow you to ignore return values, if you don’t need them.

Should every function return a value in C?

Yes. If a function contains two return statements successively, the compiler will generate “Unreachable code” warnings.

When function does not return any value then function is declared as void True or false?

Explanation: True, A function cannot return more than one value at a time. because after returning a value the control is given back to calling function.

Is it necessary to have one return statement in every function True or false?

A function may have any number of return statements each returning different values. Explanation: True, A function may have any number of return statements each returning different values and each return statements will not occur successively.

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:

What is function argument and return in C?

C function argument and return values. A function in C can be called either with arguments or without arguments. These function may or may not return values to the calling functions. All C functions can be called either with arguments or without arguments in a C program. Also, they may or may not return any values.

What happens when a function does not return a value?

Similarly when it does not return a value, the calling function does not receive any data from the called function. Function with arguments but no return value : When a function has arguments, it receive any data from the calling function but it returns no values.

Why is there no return statement in void return type function?

Not using return statement in void return type function: When a function does not return anything, the void return type is used. So if there is a void return type in the function definition, then there will be no return statement inside that function (generally).