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A template is a C++ programming feature that permits function and class operations with generic types, which allows functionality with different data types without rewriting entire code blocks for each type.
Templates are a valuable utility in C++, especially when used with operator overloading and multiple inheritance. Templates reduce the effort associated with coding different data types to a single set of code and reduce debugging efforts.
C++ provides the following two types of templates used to implement general constructs, such as lists, queues, vectors and stacks: