Problem 2
---------
Write a function called count_t, that takes an input stream 
as input parameter.  Assume that the input stream is already 
associated with a file containing words (with no punctuation, 
capital letters or numbers).  The function should return the 
number of words in the file that begin with the letter t.

Answer 2
--------
int count_t(istream &in)
{
    int count = 0;
    char s[20];

    in >> s;
    while (!in.eof())
       {
    	if (s[0] == 't')
	    count++;
	in >> s;
       }

    return count;
}

Problem 3
---------
A.  Write a class called person, with data fields fname, lname 
and year_born, whose values will be the first and last name of 
a person and the year that person was born.  Look at the other
parts of this question to see what else the class should contain.

B.  Write a member function called age, for person, which takes 
the current year as input parameter, and returns the age of the 
person at the end of the current year.

D.  Write a member function called match, for person, which
takes a first name and a last name as input parameters, and returns 
true if the person has that first and last name, false if not.

Answer 3
--------
class person {
    private:
	char fname[20];
        char lname[20];
	int year_born;
    public:
	int age(int current_year);
	bool match(char f[], char l[]);
};

int person::age(int current_year)
{
    return current_year - year_born;
}

bool person::match(char f[], char l[])
{
    if (strcmp(fname,f)==0 && strcmp(lname,l) == 0)
	return true;
    else
	return false;
}