在数组中搜索字符串

我正在为c++制作一个电话簿程序，在将搜索功能转换到主功能时遇到了问题。当我编译它并搜索名称时，它会使程序崩溃。

搜索功能：

int search(string name){
    for(int i=0; i<counter; i++){
        if(data[i][0] == name){
        return i;
        }
            else{
            cout << "Name not found" << endl;
            }
    }
}

主要功能：

int main(){
    bool done = false;
    int choice;
    string name;
    string areaCode;
    string number;
    load_contacts("contacts.txt");
    cout << "Welcome to AddressBook" << endl;
    while(!done){
        cout << "What would you like to do?" << endl;
        cout << "1) Display all contacts" << endl;
        cout << "2) Add a contact" << endl;
        cout << "3) Remove a contact" << endl;
        cout << "4) Search a contact" << endl;
        cout << "5) Exit" << endl;
        cin >> choice;
        switch (choice){
            case 1:
            display_contacts();
            break;
            case 2: 
            add_contacts(name, areaCode, number);
            cout << "Contact Added!";
            cout << endl;

            break;
            case 3:
            cout << "Name to remove: ";
            cin >> name;  
            remove_contacts(name);          
            break;
            case 4:
            cout << "Name to search: ";
            cin >> name;
            search(name);
            break;
            case 5: cout << "Good bye." << endl;
            done = true;
            break;
        }
    }
}