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In the C++ programming language, input/output library refers to a family of class templates and supporting functions in the C++ Standard Library that implement stream-based input/output capabilities. [ 1 ] [ 2 ] It is an object-oriented alternative to C's FILE -based streams from the C standard library .
In the programming language C++, unordered associative containers are a group of class templates in the C++ Standard Library that implement hash table variants. Being templates, they can be used to store arbitrary elements, such as integers or custom classes.
Added in C++20. Provides std::barrier, a reusable thread barrier. <future> Added in C++11. In 32.9.1-1, this section describes components that a C++ program can use to retrieve in one thread the result (value or exception) from a function that has run in the same thread or another thread. <hazard_pointer> Added in C++26. Provides std::hazard ...
<< std:: endl;} There are several rules that apply to the second and third operands in C++: If both operands are of the same type, the result is of that type;
The C++ Standard Library includes in the header file functional many different predefined function objects, including arithmetic operations (plus, minus, multiplies, divides, modulus, and negate), comparisons (equal_to, not_equal_to, greater, less, greater_equal, and less_equal), and logical operations (logical_and, logical_or, and logical_not).
C++ doesn't have: PROC – first class nested functions (emulation due to local definitions of class types, which could be functors; also, C++11 has lambda functions), OP and PRIO – definable operator symbols and priorities, garbage collection (could be emulated with help of smart pointers), use before define,
<< std:: endl;}}; This allows a programmer to process a list of objects of class Animal , telling each in turn to eat (by calling Eat ), without needing to know what kind of animal may be in the list, how each animal eats, or what the complete set of possible animal types might be.
In computer programming, run-time type information or run-time type identification (RTTI) [1] is a feature of some programming languages (such as C++, [2] Object Pascal, and Ada [3]) that exposes information about an object's data type at runtime.