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[C++] unsignedについて

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[C++] unsignedについて

signは符号付きという意味で, unsignedをつけることによって符号なしの変数を表す.
通常のint(signed)の表示範囲が-2,147,483,648 ~ 2,147,483,647であり, unsigned intの表示範囲は0 ~ 4,294,967,295となる.
正の整数を重点的に扱う場合に有用だと考えられる.

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