Use getline like this

streamName.getline(stringToReadInto, maxNumberOfChars to read, delimiting char);

to read in the first name it would be something like this:

char firstName[11];
myfile.getline(firstName, 10, ' ');

You'll have to run a test program to determine whether it would be 10 or 11 as the second parameter of getline(), because I always forget whether you have to account for the null char or not. I don't think so, but you can find out.