THINK++ — Engineering Visualized

Type Aliasing

The typedef Keyword

Used to create a new name (alias) for an existing data type. It doesn't create a new type; it just gives a more descriptive name to an old one.

SYNTAX

typedef unsigned long long ull;

ull bigNum = 10000000000ULL;

MODERN ALTERNATIVE: using

using VectorInt = std::vector<int>;

VectorInt myVec;

The using keyword is preferred in modern C++ as it's more readable and supports templates.

WHY ALIAS?

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