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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 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 a print or println statement. System.
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.
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 true of a void method?
What is true of a void method? It returns no value.
What is a non-void?
Nonvoid meaning (computing, mathematics) Not void. adjective.
What Does not returning a value mean?
It means that that function does not return a value to the caller explicitly.
What does not all control paths return a value mean?
The error means that if side is neither left nor right, your function will not return a value – either side is declared improperly or your enum is. An enum should be defined like So try changing your orientation structure to that. If side is not left or right, then the return value is undefined.
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 function that does not return a value?
Function ‘ ‘ doesn’t return a value on all code paths. Function ‘ ‘ doesn’t return a value on all code paths. Are you missing a ‘Return’ statement? A Function procedure has at least one possible path through its code that does not return a value.
Why does flowing off the end of a non-void function without..?
There is probably huge code base relying on that “feature”. But at least there is -Werror=return-type flag on many compilers (including gcc and clang). In some limited and rare cases, flowing off the end of a non-void function without returning a value could be useful.