如何检查字符串输入是否包含在struct的向量中[重复]

Question

struct Article
{
int Id;
string name;
string desc;
double price;

Article(int s, string n, string o, double c)
 {
    Id = s;
    name = n;
    desc = o;
    price = c;
 }
};

vector <Article> vArticle;

void GiveName(vector <Article> vArticle);
int main()
{
vector <Article> vArticle;

Article a1(1, "Banana", "Fruit", 7.99);
Article a2(2, "Apple", "Fruit", 5);
Article a3(3, "Book", "Bible", 309.99);
Article a4(4, "Laptop", "Laptop Lenovo", 4989.99);
Article a5(5, "Banana",  "Fruit ", 5.99);

vArticle.push_back(a1);
vArticle.push_back(a2);
vArticle.push_back(a3);
vArticle.push_back(a4);
vArticle.push_back(a5);

GiveName(vArticle);
}

   void GiveName(vector <Article> vArticle)
    {
    vector <Article> vInput;
    cout << "List of articles: " << endl;
    for (int i = 0; i < vArticle.size(); i++)
    {

        cout << vArticle[i].Id << ",  " << vArticle[i].name << ",  " << vArticle[i].desc << ",  " << vArticle[i].price << endl;
    }
    cout << "\n\n\n";
    cout << "Enter an article name" << endl;
    string input;
    cin >> input;
    for (int i = 0; i < vArticle.size(); i++)
      {
        if (vArticle[i].name == input)
        {
            cout << vArticle[i].Id << ",  " << vArticle[i].name << ",  " << vArticle[i].desc << ",  " << vArticle[i].price << endl;
        }
        else
        {
            cout << "Article not found" << endl;
        }
      } }

由于使用 for 循环，我的代码为每个不等于输入的成员显示“找不到文章”。 让它显示的最佳方式是什么，例如，如果我写“香蕉”，它只显示包含名称香蕉的元素。 如果没有任何元素包含它，则显示“找不到文章”？

Answer 1

尝试使用布尔标志来标记是否找到该名称，然后在循环外创建一个 if 以查看是否找到，如果没有，则打印“找不到文章”消息。

喜欢：

bool found = false;
for (int i = 0; i < vArticle.size(); i++)
  {
    if (vArticle[i].name == input)
    {
        cout << vArticle[i].Id << ",  " << vArticle[i].name << ",  " << vArticle[i].desc << ",  " << vArticle[i].price << endl;
        found = true;
    }
  }
if(found == false) {
  cout << "Article not found" << endl;
}