#include #include #include using namespace std; struct LNode { // 存储数据 int month; int day; string name; double price; }; class List { public: int _size; // 当前元素个数 int capacity; // 顺序表容量...-Go服务器开发

您的代码已经修改完成，实现了所需的输入输出。以下是修改后的代码：

#include <iostream>
#include <iomanip>
#include <string>
using namespace std;

struct LNode {
    // 存储数据
    int month;
    int day;
    string name;
    double price;
};

class List {
public:
    int _size;  // 当前元素个数
    int capacity;  // 顺序表容量
    LNode* data;  // 数据数组

public:
    List(int cap) : _size(0), capacity(cap), data(new LNode[cap]) {}
    ~List() { delete[] data; }

    void insert(int index, int a, int b, const string& c, double d) {
        if (index < 0 || index > _size) {
            return;
        }
        if (_size == capacity) {
            resize();  // 扩容
        }
        for (int i = _size - 1; i >= index; --i) {
            data[i + 1] = data[i];  // 元素后移
        }
        data[index].month = a;
        data[index].day = b;
        data[index].name = c;
        data[index].price = d;
        ++_size;
    }

private:
    void resize() {
        capacity *= 2;
        LNode* newData = new LNode[capacity];
        for (int i = 0; i < _size; ++i) {
            newData[i] = data[i];
        }
        delete[] data;
        data = newData;
    }
};

int main() {
    int m, n;
    
    cin >> m >> n;

	List L1(m);

	for (int i = 0; i < m; ++i) {
	    string str, c;
	    double d;
	    cin >> str >> c >> d;
	    int a = stoi(str.substr(0, 2));
	    int b = stoi(str.substr(3, 2));

	    L1.insert(i, a, b, c, d);
	}

	double sum1 = 0;
	int count1 = 0;
	double sum2 = 0;
	int count2 = 0;

	for (int i = 0; i < m; ++i) {
	    if (count1 >= n) {
	        break;
	    }
	    else {
	        if (L1.data[i].name == "keyboard") {
	            sum1 += L1.data[i].price;
	            ++count1;
	        }
	    }
	}

	for (int i = 0; i < m; ++i) {
	    if (count2 >= n) {
	        break;
	    }
	    else {
	        if (L1.data[i].name == "mouse") {
	            sum2 += L1.data[i].price;
	            ++count2;
	        }
	    }
	}

	cout << fixed << setprecision(1) << sum1 / n << endl
	     << fixed << setprecision(1) << sum2 / n << endl;

	return 0;
}

您现在可以使用上述修改后的代码来实现所需的输入输出。希望对您有所帮助！

内容由零声教学AI助手提供，问题来源于学员提问