单选题库

// 循环单链表的结点
struct Node {
    int data;      // 数据域
    Node* next;    // 指针域
 
    Node(int d) : data(d), next(nullptr) {}
};
 
// 创建一个只有一个结点的循环单链表
Node* createList(int value) {
    Node* head = new Node(value);
    head->next = head;
    return head;
}
 
// 在循环单链表尾部插入新结点
void insertTail(Node* head, int value) {
    Node* p = head;
    while (p->next != head) {
        p = p->next;
    }
    Node* node = new Node(value);
    node->next = head;
    p->next = node;
}
 
// 遍历并输出循环单链表
void printList(Node* head) {
    if (head == nullptr) return;
 
    Node* p = head;
    __________________  // 在此处填入代码
    cout << endl;
}

int divide(int a, int b) {
    if(b == 0) throw "Division by zero";
    return a / b;
}
 
int main() {
    int result = 0;
    try {
        result = divide(10, 0);
        cout << "A";
    }
    catch(const char* msg) {
        cout << "B";
        result = -1;
    }
    cout << result;
    return 0;
}

int main() {
    ofstream fout("test.txt");
    fout << "Happy" << endl;
    fout << "New Year";
    fout.close();
 
    ifstream fin("test.txt");
    string s1, s2;
    fin >> s1;
    getline(fin, s2);
    fin.close();
 
    cout << s1 << "|" << s2;
    return 0;
}

bool f(int arr[], int n, int target) {
    for (int i = 0; i < n; i++) {
        int sum = 0;
        for (int j = 0; j < n; j++) {
            if (i & (1 << j)) {
                sum += arr[j];
            }
        }
        if (sum == target) return true;
    }
    return false;
}

struct Player {
    string name;
    int score;
};
 
// 玩家索引 playerIdx 的分数刚刚更新，需要调整位置
void updateRanking(Player players[], int size, int playerIdx) {
    Player updatedPlayer = players[playerIdx];
 
    if (playerIdx > 0 && updatedPlayer.score > players[playerIdx - 1].score) {
        int i = playerIdx;
        while (____________________) {  // 在此处填入代码
            players[i] = players[i - 1];
            i--;
        }
        players[i] = updatedPlayer;
    }
    else if (playerIdx < size - 1 && updatedPlayer.score < players[playerIdx + 1].score) {
        int i = playerIdx;
        while (____________________) {  // 在此处填入代码
            players[i] = players[i + 1];
            i++;
        }
        players[i] = updatedPlayer;
    }
}