Need Help FAST!!!

I am a programming student who requires help. I've asked what other students I could and I couldn't get help from them. I need to complete this and I keep getting errors. My program isn't running properly. Here is my code and if someone could help soon that would be great. THANK YOU!
#include <iostream>
#include <fstream>
#include <string>

using namespace std;
int main()
{

string guess[5];
int counter;
int choice;
int name;
int hint;

counter = 0; counter++;
ifstream infile;
ofstream outfile;
infile.open("Guess.txt");
infile >> guess[5];
cout << "This is an Animal Guessing Game." << endl;
cout << "After each guess you get a clue as to what the animal is." << endl;
infile.close();
outfile.open("Guess.txt");
outfile << guess[5];
outfile.close();
while (counter < 5)
{
cout << "What animal am I?" << hint[counter] << endl;
cin >> guess;
counter++;
if (counter == 5);
cout << "Sorry I am a frog." << endl;
cout << "Play again? <y> or <n> " << endl;
cin >> choice;
switch (choice)
{
case 'y/Y':
cout << "This is an Animal Guessing Game." << endl;
counter++;
case 'n/N':
cout << "Thank you for playing. Goodbye." << endl;
default:
cout << "Illegal letter, please try again." << endl;
}
}
return 0;
}

Please use tags for ur code

Do we need to guess for the errors ?

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counter = 0; counter++;

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You set it to 0 and immediately you add 1. Why not set it to 1 the first time ?

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infile >> guess[5];

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Your array contains 5 elements, but a array is 0-based (from 0 to 4), so there is no element '5'.

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cout << "What animal am I?" << hint[counter] << endl;

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'hint' is not a array.

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cin >> choice;

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'choice' is not a character, it's a number (int).

Code:

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if (counter == 5);

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Because there is a ; at the end, this if doesn't do anything at all.

Code:

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case 'y/Y':

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A case statement can only test 1 char. Not 3 as you are trying here. Also a case statement needs a 'break' somewhere or else it will continue with the next case.