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C Programming

auto Storage Class in C

Know auto as the default for local variables (rarely written explicitly).

auto Storage Class in C — a practical guide to C auto storage class with clear examples you can reuse in real projects.

C Programming Tutorial Series (69/102). Prefer one article? Read the complete C programming tutorial.

Short description

In modern C, you usually omit auto.

auto tip

Default for block-scope vars
Automatic storage duration
Rarely written explicitly today

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