予よ約やく語ご

noun

reserved word; keyword

In programming languages, a word that has a special meaning and cannot be used as an identifier.

• C言げん語ごでは、ifやforは予よ約やく語ごです。

  In C, 'if' and 'for' are reserved words.

• 変へん数すう名めいに予よ約やく語ごを使つかうとエラーになります。

  Using a reserved word as a variable name causes an error.