Could you help me debug the following code?

#include

#include

#include

#include

using namespace std;

// REQUIRES: str1 and str2 point to C-strings

// EFFECTS: If str1 and str2 contain exactly the same characters, returns 0.

// Otherwise, return a positive number if the first differing char

// has a greater value in str1 than in str2 and a negative number in

// the opposite case (you may NOT call strcmp).

int strcmp_eecs280(const char *str1, const char *str2){

// Make auxiliary pointers to move. Note: technically

// we could just use str1 and str2 directly in this case.

const char *ptr1 = str1;

const char *ptr2 = str2;

// Advance both pointers to first mismatched characters.

while (*ptr1 && *ptr1 == *ptr2) {

++ptr1;

++ptr2;

}

// Subtract characters to get a difference. If positive, it means str1 is

// greater, negative means str2 is greater

//zero means equal.

return *ptr1 - *ptr2;

}

// EFFECTS: Prints "Please enter a word: " to prompt the user to enter a word

// and then reads a word from cin to be returned. After reading the

// input, clean up by printing a newline to cout.

string get_user_word(){

string s = "Please enter a word: ";

cout << s;

string s1;

cin >> s1;

cout << endl;

return s;

}

// EFFECTS: Opens the file "words.txt" and looks for the word passed in as a

// parameter, returning true if found and false otherwise. If it

// cannot be opened, it prints an error message and calls exit(1).

// NOTE: You MUST use the strcmp_eecs280 function (NOT strcmp).

bool find_word(const string &query){

// Open words.txt file for reading

ifstream fin("words.txt");

if (!fin.is_open()) {

cout << "Couldn't open 'words.txt'" << endl;

exit(1);

}

string word;

while (fin >> word) {

// If word is equal to query (strcmp == 0), return true

if (strcmp_eecs280(query.c_str(), word.c_str()) == 0) {

return true;

}

// Read in the next word

fin >> word;

}

// If not found, return false

return false;

}

/******************************* TESTING CODE *******************************/

void test_strcmp_eecs280() {

assert(strcmp_eecs280("turtle", "frog") > 0);

assert(strcmp_eecs280("turtle", "turtles") < 0);

assert(strcmp_eecs280("", "frog") < 0);

assert(strcmp_eecs280("lizard", "lizard") == 0);

assert(strcmp_eecs280("hello", "hello") == 0);

}

int main(){

test_strcmp_eecs280();

cout << "Welcome to eecs280 spell checker!" << endl;

cout << "You may quit at any time by typing \"quit\"." << endl;

string user_word = get_user_word();

while (user_word != "quit"){

if (find_word(user_word)) {

cout << "It appears " << user_word << " is spelled correctly!" << endl;

}

else {

cout << "Oops. " << user_word << " is not correctly spelled." << endl;

}

user_word = get_user_word();

}

cout << "See you again soon. Happy spelling!" << endl;

return 0;

}