C++ has been around for more than 15 years. During that long period it has been significantly extended, improved, and standardized. One of the consequences of any standardization process is that old, dangerous, redundant, undesirable features are gradually removed. A good example for deprecated features in C++ is using int type to represent boolean values rather than using the built-in bool type; or using the static keyword to indicate internal linkage of an otherwise global function/object instead nameless namespace.
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