#include <stdio.h>
#include <stdlib.h>
#include <time.h>
 
#define TOTAL_CLASSES 10  // 班の数
#define MAX_POINTS 5      // 1つの班に与えられる最大得点
#define MAX_TOTAL_POINTS 10  // 合計得点の上限
 
int main() {
    int my_class;                // 自分の班の番号
    int scores[TOTAL_CLASSES];   // 各班への得点
    int total_points = 0;        // 合計得点
    int i;                       // ループ用変数
 
    // 自分の班番号を入力
    printf("自分の班の番号を入力してください (0〜%d): ", TOTAL_CLASSES - 1);
    scanf("%d", &my_class);
 
    if (my_class < 0 || my_class >= TOTAL_CLASSES) {
        printf("エラー: 無効な班番号です。\n");
        return 1;  // 異常終了
    }
 
    // 乱数の種を初期化
    srand(time(NULL));
 
    // 初期化
    for (i = 0; i < TOTAL_CLASSES; i++) {
        scores[i] = 0;
    }
 
    // ランダムな得点を生成
    for (i = 0; i < TOTAL_CLASSES; i++) {
        if (i == my_class) {
            scores[i] = 0;  // 自分の班は必ず0点
            continue;
        }
 
        if (total_points < MAX_TOTAL_POINTS) {
            // 班に割り振ることができる得点の最大値を計算
            int remaining_points = MAX_TOTAL_POINTS - total_points;
            int max_points_for_class = remaining_points < MAX_POINTS ? remaining_points : MAX_POINTS;
 
            // 班の得点を乱数で決定
            scores[i] = rand() % (max_points_for_class + 1);
            total_points += scores[i];
        } else {
            scores[i] = 0;  // 残りの得点がない場合は0点
        }
    }
 
    // 結果を表示
    printf("\nランダムな得点結果:\n");
    for (i = 0; i < TOTAL_CLASSES; i++) {
        printf("班 %d: %d 点\n", i, scores[i]);
    }
 
    printf("合計得点: %d 点\n", total_points);
 
    return 0;  // 正常終了
}
 

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