im试图显示对象数组，但输出错误

Question

我正在尝试创建对象数组并显示它，但是由于某种原因，它给出了错误的输出结果我认为我以错误的方式使用了新运算符，但我不确定出什么问题

#include<bits/stdc++.h>
using namespace std;
class X {
    string s;
    int b;
public:

    void set(string s,int b ) {
        this->s = s;
        this->b = b;
    }
    void display() {
        cout << this->s << ' ' << this->b << '\n';
    }

};

int main() 
{
    int t;
    cin >> t;
    for (int i = 0; i < t; i++) {
        int n;
        cin >> n;
        X* a = new X[n];
        for (int j = 0; j < n; j++) {
            string s; int b;
            cin >> s >> b;
            a[i].set(s, b);
        }

        for (int i = 0; i < n; i++) {
            a[i].display();
        }

    }
}

输入：1个3阿比1omkar 2ritesh 3

输出：礼仪300

Answer 1

#include<bits/stdc++.h>
using namespace std;
class X {
    string s;
    int b;
public:

    void set(string s,int b ) {
        this->s = s;
        this->b = b;
    }
    void display() {
        cout << this->s << ' ' << this->b << '\n';
    }

};

int main() 
{
    int t;
    cin >> t;
    for (int i = 0; i < t; i++) {
        int n;
        cin >> n;
        X *a[n];
        for (int j = 0; j < n; j++) {
            a[j] = new X;
            string s; int b;            
            cin >> s >> b;
            a[j]->set(s, b);
        }

        for (int i = 0; i < n; i++) {
            a[i]->display();
        }

    }
}

希望这会有所帮助：）

Answer 2

X* a[n];
for(int k = 0 ; i < n ; ++i){
    a[k] = new X; 
}