Practice

 #include <iostream>
  2 using namespace std;
  3 int main()
  4 {
  5     cout << "Enter the name of the person you want to write too (followed by 'enter'): " << flush;
  6     string first_name;            // first_name is a variable
  7     cin >> first_name;
  8     cout << "Dear," << first_name << "!" << endl;
  9     cout << "How are you doing? I am fine but I miss you terribly." << endl;
 10     cout << "I am fine these days just busy with work is all." << endl;
 11     cout << "Seems like I am doing good with my weight loss though." << endl;
 12     cout << "I am eating healthy and exercising 5 days a week." << endl;
 13     cout << "What is your other friends name ? "<< flush;
 14     string friend_name;
 15     cin >> friend_name;
 16     cout << "How is "  << friend_name << " doing these days? " << endl;
 17     cout << "Have you seen " << friend_name << " lately? " << endl;
 18     char(0); // still not sure if this helps or not yet. Confused on it a bit
 19     cout << "Please tell me if your friend is male(m) or female(f) (followed by 'enter') ." << endl;
 20     string input;
 21     string male = "m";
 22     string female = "f";
 23     cin >> input;
 24     if(input == male)  // finally got this one figured out. Had to remove the ; same as below
 25     {
 26         cout << "If you see " << friend_name << " please ask him to call me. " << endl;
 27     }
 28     if(input != male)  // had to swap the string names above to get it to accept m or f like book says to
 29     {
 30         cout << "If you see " << friend_name << " please ask her to call me. " << endl;
 31     }
 32     return 0;
 33 }