c++ - vector 追加

Question

到目前为止这是我的代码，我想做的是说用户输入 1 2 3 然后按 -1，他或她将被要求输入另一组数字，比如 9 8 7，我的程序是什么假设要做的是将它们显示为 1 2 3 9 8 7，而是像这样显示它们 6 6 6 6 6 6，基本上它会计算有多少个数字并显示该数字的数字数量。那么谁能帮我解决这个问题，我该怎么做才能显示两组数字的总和？

#include <iostream>

#include <vector>

using namespace std;

vector<int> append(vector<int> a, vector<int> b)
{
    int n = a.size();
    int m = b.size();
    vector<int> c(n + m);
    int i;

    for (i = 0; i < n; i++)
        c[i] = a[i];

    for (i = 0; i < m; i++)
        c[n + i] = b[i];

    return c;
}

int main()
{
    cout << "Please enter a set of numbers, insert -1 when done.\n";
    vector<int>a;
    bool more = true;
    while (more)
    {
        int n;
        cin >> n;
        if (n == -1)
            more = false;
        else
            a.push_back(n);
    }


    cout << "Please enter another set of numbers, insert -1 when done.\n";
    vector<int>b;
    more = true;
    while (more)
    {   
        int m;
        cin >> m;
        if (m == -1)
            more = false; 
        else 
            b.push_back(m);
    }

    vector<int>d = append(a,b);
    {

        int i;
        for (i= 0; i < d.size(); i++)

        cout << d.size() << "\n";
    } 
}

Answer 1

那是因为最后你打印的是大小，而不是值:

cout << d.size() << "\n";

应该是:

cout << d[i] << "\n";