pointer

指示棒

黒板や地図、画面上のものを指すための細長い棒。

やさしい英語で： A long, thin stick used to show things on a board, map, or screen.

• The teacher held a pointer.
• She used her pointer to show the river on the map.
• He tapped the board with a wooden pointer.

類義語： pointing stick

よく使う表現： teacher’s pointer, wooden pointer, use a pointer

ポインタ

データを置けるメモリ上の場所のアドレスを保存する変数。

やさしい英語で： A computer variable that stores the address of a place in memory where data can be kept.

• The pointer contains a memory address.
• Check whether the pointer is null.
• The program stores pointers to several objects.

使い方： pointer to something (This variable contains a pointer to the first record.)

類義語： reference

よく使う表現： null pointer, pointer variable, pointer to something

指し示す人、指示器

ある物の方向を指して、その場所を示す人や物。

やさしい英語で： Someone or something that shows where something is by pointing toward it.

• Her finger served as a pointer.
• The arrow acts as a pointer toward the exit.
• We chose one child as the pointer and another as the speaker.

よく使う表現： act as pointer, serve as pointer, pointer and speaker