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型の違う値を型変換して別の変数に代入する方法

Last updated at Posted at 2020-01-26

##文法

####データ型 変数名 = (データ型) 代入される側の変数名

※型指定/型キャストをする場合、右辺のデータ型を括弧で括る必要があります。忘れがちなので注意(戒め)。

public class Main {
	public static void main(String[] args) {

        double rand = Math.random(); * 100;

        //変数に変数を代入
		int number = (int)rand;

		System.out.println(number);
	}
}

##おまけ

###変数定義と同時にMath関数を代入することも可能
その場合は、()でくくる。

int game_num = (int)(Math.random() * 10 + 1);
System.out.println("ゲームの本数は" + game_num + "個");
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