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Last active December 7, 2016 13:31
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新・明解Java入門 演習6-6
import java.util.Scanner;
public class En06_06 {
public static void main(String[] args) {
Scanner stdIn = new Scanner(System.in);
// 人数用変数
int man;
do {
System.out.println("点数の計算をします。");
System.out.print("何人計算しますか:");
man = stdIn.nextInt();
if (man <= 0) {
System.out.println("1人以上を入力して下さい。");
}
} while (man <= 0);
// 配列用変数(最大値man)
int points[] = new int[man];
// 配列を回しながら、点数の代入を行う
for (int i = 0; i < points.length; i++) {
System.out.printf("%d番目の点数:", (i + 1));
points[i] = stdIn.nextInt();
}
// 最大・最小値を求める(操作)
int max = points[0];
int min = points[0];
for (int i = 0; i < points.length; i++) {
// もし、point[i]よりも数値が大きいor小さい場合は、
// その値を代入する。
if (points[i] > max) {
max = points[i];
}
if (min > points[i]) {
min = points[i];
}
}
System.out.println();
// 合計を求める
int sum = 0;
for (int i = 0; i < points.length; i++) {
sum += points[i];
}
System.out.printf("最高点:%d\n", max);
System.out.printf("最低点:%d\n", min);
System.out.printf("合計点:%d\n", sum);
// 平均点を求める(manをdoubleでキャストする)
System.out.printf("平均点:%.1f\n", (sum / (double) man));
}
}
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