Extracting a suffix from a string

[SARAHE]

I have a C++ programming problem to extract a suffix such as Jr. or Sr. from a string that may vary each time. We are currently working with one assigned variable but I wanted to know how to code it if I have a file that would vary instead of working with a constant variable. I have the program working for the constant but I would like to know how to code for a file. The Proff. said we would have to look for the space but we would have to extract the previous spaces first???? Here is what I have:

#include <iostream>
#include <string>

using namespace std;
//extracts data from string

int main()
{
   string fullName = "Mike Lee Stephen, Jr";
   string fname, mname, lname, suffix;
   string position;
   position = fullName.substr(17,2);
   //*lname = fullName.substr(position, 8);
   cout << position << endl;
   return 0;
}

[horace1]

you can search backwards from the end of a string using find_last_of() and store the suffixs in an array, e.g.

#include <iostream>
#include <string>

using namespace std;
//extracts data from string

int main()
{
string fullName = "Mike Lee Stephen, Jr";
string suffixs[]={"Jr","Sr"};
string fname, mname, lname, suffix;
string position;
position = fullName.substr(17,2);
//*lname = fullName.substr(position, 8);
cout << position << endl;
int index = fullName.find_last_of(suffixs[0]);
cout << index << " " << fullName.at(index-1) << endl;
cin.get();
return 0;
}

as you read each name from the file you would need a loop to go thru the suffixs