Help with the rest of this program

here is sample data:
*CSC121
John Jones
Mary Kelly
*MTH453
Mary Kelly
James Johnson

Given a collection of class rolls, this program allows the advisor
to extract a list of all the courses taken by a given student. */

#include <iostream>
#include <iomanip>
#include <fstream>
#include <strstream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;

Code:

int main()
{

	string filename;
	string str;
	string Name;
	vector<string> studentName;
	vector<string> course;

	cout<<"Please enter the file name where the class rolls are stored:"<<endl;
	cin>>filename;

	ifstream istr(filename.c_str());

	while ( getline(istr, str) ) {
		istringstream istr(str.c_str());
		cin >> str;
		while (str != "*"){
			studentName.push_back(str);
		cin >> str;
		}
	}
	
		while (str == "*"){
			course.push_back(str);
		cin >> str;
		}


cout<<"Enter the first name, a space, and last name of the student you are searching for:"<<endl;
cin<<Name;

can anyone shed any light on this??

I can shed some light on the board rules and suggest a specific title for your threads.

What exactly is your specific question?

I need help with searching the vectors to display all the classes a particular student appears in.