getline() and cin conflicts

Hi, I am writing a code that will put names into a map along with the ID numbers of the names (as in; John doe, ID: 23). In order to read the entire name I used the std::getline() function (since it jumps over spaces and terminates input on a new line) but when I get the ID I use a simple cin >> ID.
The problem arises when lower in my program I ask the user to input a name to search for in the database. Since this again can be more than one word I use a getline(), but when I run my program it skips over this step.

I thought this was iffy and when i changed the cin >> ID to a getline statement everything worked out. My question is; is there any way to have cin>> and getline() statements in your code without them compiling. I would really hate to have to write a stringToInto convertion function if i had to use a getline() to retrieve the ID number.

My code follows:

Code:

---


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




class NameID
{
public:
        string name;
        string searchName;
        int ID;
        map<string, int> List;
        map<string, int>::iterator iter;

        //getInput fnc
        //Reads input from user and puts data into std::map
        void getInput()
        {
                cout << "Input into database.";
                cout << endl;
                cout << "Enter name and associated ID number.";
                cout << endl;
                cout << "A blank line ends input.";
                cout << endl;
                cout << endl;
                cout << "Enter name: ";
                getline(cin, name);
                cout << "Enter ID #: ";
                //getline(cin, ID);
                cin >> ID;
                cout << endl;
        }

        //puts item into map.
        void putToMap()
        {
                List[name] = ID;
        }

        //findName fnc
        //Searchs database for name and give name,ID pair.
        void findName()
        {
                cout << "Enter name to search.";
                cout << endl;
                cout << "If name is stored in database, it will be printed out";
                cout << endl;
                cout << "along with the ID #.";
                cout << endl;
                cout << endl;
                cout << "Enter name: ";
                getline(cin,searchName);
                cout << endl;
                cout << "------Data Found-------";
                cout << endl;
               
                cout << List[searchName];
                cout << endl;
        }



};


//main fnc
//runs prog.
int main()
{
        NameID Program;
        Program.getInput();
        Program.putToMap();
        Program.findName();
        //cout << Program.name;
        //cout << Program.ID;
        return 0;
}

---

Can anybody shed some light on this?

Reading numbers in directly with cin is tricky. Just take in the ID as a string, then you can use the atoi function in cstdlib so you don't have to write the strToInt function. Here is the fix:

Code:

---

  void getInput()
  {
    cout << "Input into database.";
    cout << endl;
    cout << "Enter name and associated ID number.";
    cout << endl;
    cout << "A blank line ends input.";
    cout << endl;
    cout << endl;
    cout << "Enter name: ";
    getline(cin, name);
    cout << "Enter ID #: ";
    string tempID;
    getline(cin, tempID);
    ID = atoi (tempID.c_str());
    cout << endl;
  }

---

Also a suggestion. Why are you mapping names to id? It should probably be the other way around since you want to key by a unique identifier (such as an ID).

Regards

If I understand your problem correctly another thing you can do is use the cin.ignore(1) function.

When you use cin.getline it stops reading when it gets to a new line(unless otherwise specified). This causes the newline to be read by the input buffer and it seems that it was skipped. cin.ignore(1) discards the newline.