I have somewhat like the following code running for a while live now and it works. // define a timer struct lightTimer { unsigned long time; // time in seconds since midnight so range is 0-86400 …

Sep 28, 2010 · The difference between struct and class is small in C++, basically only that struct members are per default public and class members are per default private. However, I still use …

This means that one can use a struct in an include file that can be #include into either C++ or C so long as the struct is a plain C style struct and everything else in the include file is compatible …

You can use template<class T> but not template<struct T>. Note also that the C++ standard allows you to forward-declare a type as a struct, and then use class when declaring the type …

Jul 30, 2011 · struct MyStruct { int messageID; int tempVariable; }; In your main.cpp, this is where you actually use the struct: void someFunction() { struct MyStruct tempStruct; // do something …

Jan 21, 2018 · To access the same instance of the struct across the source files, you can still use the extern method. // Definition.h struct test_st { int state; int status; }; // File1.c #include …

Sep 10, 2023 · The reason for having struct in C++ is C++ is a superset of C and must have backward compatible with legacy C types. For example if the language user tries to include …

Apr 10, 2010 · In C++ a struct is exactly the same as a class, except structs are public by default. Classes are private. So whenever you want to group free functions together use a namespace. …

Jan 21, 2017 · In C++ classes/structs are identical (in terms of initialization). A non POD struct may as well have a constructor so it can initialize members. If your struct is a POD then you …

It's arrays that you can't return from functions (or assign), since arrays are not first-class types in C. But a struct is a properly first-class type, and can be assigned, passed, and returned with …