/* Program to play the Name Game   */

#include <iostream.h>
#include <string>

//CheckName returns "true" if the name is legal, "false" otherwise
bool CheckName(string name);

//FindFirstVowel returns the index of the first vowel in name
int FindFirstVowel(string name);


void main(){
  //here we will declare some variables
  string name, root, indexchar;
  int i;
  int NameLength, FirstVowel;

  //This do..while loop will repeat the game as long as
  //the user does not enter "done" or "Done"
  do{

    //We start with a do..while loop to make sure the user
    //inputs a legal name.
    do{
      //First we output a line to the user
      cout << "Enter a name: ";
      //Now we get the user's response
      cin >> name;
    }while(CheckName(name) == false);

    FirstVowel = FindFirstVowel(name);
    
    //Now that we know where the first vowel is, we can
    //select the substring that starts there
    root = name.substr(FirstVowel, NameLength - FirstVowel);
    
    //We have all the info we need, so we proceed to output
    cout << "\n" << name << ", " << name << ", Bo B" << root << endl;
    cout << "Banana, Fana, Fo F" << root << endl;
    cout << "Fe, Fi, Mo M" << root << endl;
    cout << name << "!" << endl;
  } while(name != "Done" && name != "done");
}


//Here is the CheckName function
//It returns "true" if the name is "legal,"
//and returns "false" if the name is not "legal."

bool CheckName(string name){
  bool retval = true;		/* This is the returnvalue...it
				   is initialized to "true" here,
				   and will change if "name" is 
				   illegal in any way               */
  bool VowelFlag = false;	/* becomes true if name has a vowel */

  int i;			/* Used as a counter */
  string indexchar;		/* Contains the current character */
  
  //We use a loop to check for a vowel
  for(i = 0; i < name.length(); i++){
    indexchar = name.substr(i,1);
    if(indexchar == "a" || indexchar == "e" || indexchar == "i"
       || indexchar == "o" || indexchar == "u"){
      VowelFlag = true;
      break;
    }
  }
  if(VowelFlag == false)
    retval = false;

  if(name == "chuck" || name == "Chuck")
    retval = false;

  return retval;
}


//Here is the FirstVowel function
//It returns the index of the first
//vowel in the "name" argument

int FindFirstVowel(string name){

  //You should fill in the body of this 
  //function so that it calculates and returns
  //an integer value, just like the "for" loop
  //in our original program

  int FirstVowel, i;
  string indexchar;

  //Now we use a loop to find the first vowel
  for(i = 0; i < name.length(); i++){
    indexchar = name.substr(i,1);
    if(indexchar == "a" || indexchar == "e" || indexchar == "i"
       || indexchar == "o" || indexchar == "u"){
      FirstVowel = i;
      break;
    }
  }
  return FirstVowel;
}