C++ program where user will input names and decide which gender (M/F) to show

Using c++ I need to make a program using map in c++ where the gender (M or F) is the key of 6 input names, and then it will ask the user to choose what gender to display (Male or Female). I am stuck with this, I do not know what to do next.

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

int main()
{
    map<char,string> mapName;
    map<char,string>::iterator mapITR;

    cout<<"Enter 6 names: "<<endl;
    for(int a=1; a<=6; a++){
        
        
    }

    return 0;
}