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How do you remove control reaches at the end of a non void function?
Another way to get rid of the warning is to add assert(false); at the end of the function, to clearly tell the compiler (and human reader) that you deliberately omitted the else case because you are sure it cannot happen.
What are void and non void functions?
If your function has no reason to return something, it shouldn’t return anything, i.e., it should return void . There is no point in giving a function which doesn’t produce any result an artificial return value.
Why do we use void as it is returning nothing?
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 non-void method?
Non-void methods differ from void methods in that they give something back. Since the method sum has a return type of int the return line is required to return a value of this type. A non-void method’s return line can be just about anything as long the code after the return matches the return type.
Why is control may reach end of non-void function in C?
Hence you are getting an error “reach end of non-void function in C”. Additionally, remove break after return statement. if return executes then break never get chance to execute and break loop. Check your compiler should give you a warning – ‘unreachable code’.
How to flow off the end of a function?
Your function as it is now allows you to flow off the end of the function with no explicit return which is undefined behavior, the draft standard section 6.6.3 The return statement says; […]Flowing off the end of a function is equivalent to a return with no value; this results in undefined behavior in a value-returning function.
What does not return a value from a function mean?
Not returning a value from a function is Undefined Behaviour. The fact that you got correct results is purely accidental and not to be relied upon, the compiler could well choose to format your hard drive or order a pizza instead. Thanks for contributing an answer to Stack Overflow!
When to use-o0 in MSVC debugging?
The only time you should ever use -O0 is for step-by-line debugging, which is usually not a good debugging approach anyway, but it’s what most people who got started with MSVC learned on… R.. GitHub STOP HELPING ICE