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To learn more, see our tips on writing great answers. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? How does typecasting work and are there any size issues? Can I use the spell Immovable Object to create a castle which floats above the clouds? When you do dereferencing by * that operation dereferences the value of the original pointer. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? It is perfectly legal to cast a void* to char*. Simple deform modifier is deforming my object, Ubuntu won't accept my choice of password. How to pass a 2D array as a parameter in C? and our So when you print the value of the pointer, the integer is considered by taking the first byte (that was c) and other consecutive bytes which are on stack and that are just garbage for your intent. // OK: lvalue denoting the original d object, // UB: the b subobject is not a base class subobject, // 6. array-to-pointer followed by upcast, https://en.cppreference.com/mwiki/index.php?title=cpp/language/static_cast&oldid=149965, when converting a 'pointer to object' to 'pointer to, the conversion from floating-point values, the conversion from bit-fields to rvalue references, the conversion from integral or enumeration values to enumeration, the conversion from integral or enumeration values to, the conversion from a member of base class type to, a standard-layout class object with no data members, a non-standard-layout union object and a non-static data, for base-to-derived pointer conversions and, the conversion to enumeration types with fixed underlying type, a standard-layout class might have a non-pointer-interconvertible, If the underlying type is not fixed, the behavior is undefined if the value of, If the underlying type is fixed, the result is the same as. Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. What is a smart pointer and when should I use one? What is the difference between a definition and a declaration? There's one case where the behavior is defined, which is if the pointer was originally an, Other consecutive bytes are not garbage, but the value of. ***************************************************************************, * @brief A basic state machine implementation, * @defgroup sm_group State Machine Implementation, * @brief This basic state machine implementation shows the basic concept of a state, * machine where each state is represented by a data object that contains. The caller is responsible for calling the destructor (and not `delete`) on. This article focuses on discussing the static_cast in detail. The return value of static_cast will be of dest_type. Perform a single donation with more payment options available. It runs after the execution of each state machine cycle. FreeRTOS_State_Machine/states.h at master - Github rev2023.5.1.43405. The language lets you cast any pointer to any other pointer without comment. The run function of the next state, * will be run after the state change. A-143, 9th Floor, Sovereign Corporate Tower, We use cookies to ensure you have the best browsing experience on our website. Pointers to objects may be converted to pointers to characters and used to access the bytes of an object. "the last two digits will always be 35 (that's the value of the character '5')." The function is still able to change the value, but requires a const_cast to do so: void foo::p() const{ member = 1; // illegal const_cast <int&> (member) = 1; // a bad practice but legal }