Improving user inteface

#include <stdio.h>
#include <float.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
 
#define WORD_LENGTH 26
#define WHEEL_SIZE 24
#define NUM_PLAYERS 3
#define BANKRUPT 0
#define LOSE_TURN -999
#define VOWEL_COST 250
 
char to_upper(char aLtr)
{
	char ltr = aLtr;
	if (ltr >= 'a' && ltr <= 'z'){ /*converts letter to uppercase if typed in as lowercase*/
		ltr = (char)((int)ltr - 32); 
	}
	return ltr;
}
 
int spin_wheel()
{
	int wheel[WHEEL_SIZE] = {800, 350, 450, 700, 300, 600, 5000, 300, 600, 300, 500,
				    800, 550, 400, 300, 900, 500, 300, 900, 600, 400, 300,
				    BANKRUPT, LOSE_TURN};
	int spin = (int)(((float)rand() / RAND_MAX) * WHEEL_SIZE); /*randomly selects value*/
	return wheel[spin];
}
 
int isvowel(char guess) 
{
	int istrue = 0; /*initializes is true to indicate a vowel has not been chosen*/
		if (guess == 'a' || guess == 'A' ||
		guess == 'e' || guess == 'E' ||
		guess == 'i' || guess == 'I' ||
		guess == 'o' || guess == 'O' ||
		guess == 'u' || guess == 'U'){
			istrue = 1;
			}
	return istrue; /*vowel has been chosen*/
}
 
void print_puzzle (int size, char puzzle[], char clue[])
{
	int i;
	printf("===============================\n");
	printf("Puzzle\n");
	printf("%s\n", clue); /*prints clue*/
	printf("===============================\n\n"); 
	for (i = 0; i < size; ++i){
		printf("%c",puzzle[i]); /*prints word hidden*/
		}
	printf("\n\n===============================\n\n");
}
 
void print_score(int players, int score[])
{
	int p;
	printf("\n");
	for (p = 0; p < players; ++p){
		printf("Player %d ", p+1); /*prints player numbers*/
		}
	
	printf("\n");
	
	for (p = 0; p < players; ++p){
		printf("======== ");
		}
	
	printf("\n");
 
	for (p = 0; p < players; ++p){
		printf(" %d ", abs(score[p])); /*prints each players score*/
		}
	
	printf("\n\n");
}
 
int spin(int player, int scores[ ], char phrase[ ], char puzzle[ ], int size)
{
	int player_continues = 1;
	int spin_value;
	char word[100];
 
	printf("You chose to spin the wheel!\n\n");
	spin_value = spin_wheel();
	if (spin_value == -999) /* player spins lose turn */{
		printf("Sorry Player %d, you spun lose a turn.\n", player+1);
		player_continues = 0;
	}
	else if (spin_value == 0) /*player spins bankrupt */{
		printf("Sorry Player %d, you spun bankrupt.\n", player+1);
		scores[player] = 0;
		player_continues = 0;
	}
	else{
		char ltr = ' '; /*ltr is initialized to blank*/
		int i;
		int cnt = 0;
		printf("You spun %d\n\n", spin_value);
 
		/*  getting the consonant */
		do{
			printf("Enter a letter ->");
			if(fgets(word,100,stdin)){ /*gets users input*/
				sscanf(word, "%c", &ltr);
				}				
			printf("\n\n");
			ltr = to_upper(ltr); /*converts letter choice to uppercase*/
			if (isvowel(ltr)){ /*player cant guess vowel*/
				printf("Incorrect input. You cannot pick a vowel when you've chosen to spin\n\n");
			}
			if (!isalpha(ltr)){ /*if input is something other than a letter*/
				printf("Incorrect input. This is not a letter.\n\n");
			}
 
		}while(!isalpha(ltr)||isvowel(ltr)); /*continue until a consonant is chosen*/
 
	for (i = 0; i < size; ++i){
		if (phrase[i] == ltr){
		if (puzzle[i] == ltr) /* already revealed */{
			printf("Sorry, %c has already been revealed\n",ltr);
			player_continues=0;
			cnt = -1;
			break;
			}
		else {
			++cnt;
			puzzle[i] = phrase[i]; /*reveals consonant*/
			}
		}
	}	
	if (cnt > 0){
		int value = cnt * spin_value; /*multiples numer of players choice of consonant by wheel value*/
		printf("Congratulations player %d!\n\n",player+1);
		printf("There are %d %cs in the puzzle.\n\n", cnt, ltr);
		printf("Your current score is %d.\n\n",value);
		scores[player] += value;
		printf("Your total score is %d.\n\n", scores[player]);
	}
	else if (cnt == 0){
		printf("Sorry, there aren't any %cs in the puzzle.\n\n",ltr);
		player_continues = 0; /*player looses turn*/
		}
	}
	return player_continues;
}
 
int buy_vowel(int player, int scores[], char phrase[], char puzzle[], int size)
{
	int player_continues = 0;
	char ltr;
	int i; 
	int cnt; 
	char word[100];
 
	printf("You chose to buy a vowel!\n\n");
	if (scores[player] < VOWEL_COST) { 
		printf("Sorry, you don't have enough money yet.\n\n");
		player_continues = 1;
		}
	else {
		ltr = ' ';
		cnt = 0;
		while (isvowel(ltr) == 0) {
			printf("Player %d, pick a vowel -> ",player+1);
			if(fgets(word,100,stdin)){ /*gets users input*/
				sscanf(word, "%c", &ltr);
				}				
			ltr = to_upper(ltr); /*player choice converted to uppercase letter*/
			printf("\n\n");
			}
 
		for (i = 0; i < size; ++i){
			if (phrase[i] == ltr){
				if (puzzle[i] == ltr) /* already revealed */{
					printf("Sorry, %c has already been revealed",ltr);
					cnt = -1;
					player_continues = 0; /*player looses turn if letter has already been chosen*/
					break;
				}
				else {
					++cnt;
					puzzle[i] = phrase[i]; /*letters of puzzle are revealed*/
				}
			}
		}
		scores[player] -= VOWEL_COST; /*cost of vowel is deducted from score*/
		if (cnt > 0){
			printf("Congratulations player %d!\n\n",player+1);
			printf("There are %d %cs in the puzzle.\n\n", cnt, ltr);
			player_continues = 1;
			}
		else if (cnt == 0){
			printf("Sorry, there aren't any %cs in the puzzle.\n\n",ltr);
			player_continues = 0;
		}
		printf("Total cost for your guess is %d.\n\n",VOWEL_COST);
		printf("Your total score is %d.\n\n", scores[player]);
		}
	return player_continues;
}
 
int solve(int player, int score[], char phrase[], int size, char clue[]){
	char soln[256];
	int i;
	int solved = 1;
	printf("You chose to solve the puzzle!\n\n");
	printf("DIRECTIONS: Type in your solution on one line. Separate each word with one space.\n\n"); 
	printf("Solution -> ");
	gets(soln); /*accepts players answer*/
	printf("\n\n");
 
	while (i < size) {
    if (isalpha(phrase[i])) {
        if (phrase[i] != to_upper(soln[i])) {
            solved = 0;
        }
        break;
    }
    ++i;
}
 
 
 
	if (solved == 1) /*if guess is right*/{
		printf("Congratulations Player %d!\n\n",player+1);
		print_puzzle(size, phrase, clue);
		score[player]+=1000; /*adds 1000 to players score for right answer*/
		printf("You won the round!!!! Your score is %d\n\n",score[player]);
		}
	else {
		printf("Sorry Player %d\n\n",player+1);
		printf("Your solution does not match; a thousand dollars will be deducted.\n\n");
		if(player[score]>=1000)
			player[score]-=1000; /*1000 deducted for wrong answer if player has more than 1000*/
		else
			player[score]=0; /*if player does not have have 1000 score is just reduced to 0*/
	}
	return solved;
}
 
int player_turn(int player_num, int player, int score[], char phrase[], char puzzle[], char clue[], int size){
	
	int solved = 0; /*solve is initialized to zero to indicate puzzle has not been solved*/
	char player_continues = 1;
	char options[10]; /*string to hold choice*/
 
	while (player_continues == 1){
		char choice = ' '; /*choice initialized to nothing*/
		print_score(player_num, score);
		print_puzzle(size, puzzle, clue);
		printf("Player %d, what do you want to do?\n\n", player+1);
		while (choice != 'S' && choice != 'O' && choice != 'B') {
			printf("(S)pin, S(o)lve or (B)uy a vowel -> ");
			if(fgets(options,10,stdin))
				{
					sscanf(options, "%c", &choice); /*player types in choice and it is stored in options*/
				}
 
			choice = to_upper(choice); /*converts choice to uppercase to prevent case sensitivity*/
			printf("\n");
			}
		if (choice == 'S'){ /*if player chooses spin*/
			player_continues = spin(player, score, phrase, puzzle, size);
			}
		else if (choice == 'O'){ /*if player chooses solve*/
			solved = solve(player, score, phrase, size, clue);
			player_continues = 0;
			}
		else /* buy a vowel */{
			player_continues = buy_vowel(player, score, phrase, puzzle, size);
			}
		}
	return solved;
}
 
int initialize_array(char phrase[], char puzzle[], char clue[]){
	FILE* phraseFile; /*input file*/
	char temp[100]; /*temporary array*/
	int line; /*line from which word and clue are chosen*/
	int i=0; /*counter for loop*/
	int len; /*length of line from file*/
 
 
	line=rand()%41+1; /*randomization of line*/
	
	phraseFile = fopen("clues.txt", "r"); /*opens file*/
	            
	if (!phraseFile) {
		fprintf(stderr, "Oops - file not opened !\n"); /*if there is error in opening file program is exited*/
		exit(1);
		}
 
		while(line--){
			fgets(temp, 100, phraseFile); /*gets line and stores in temp*/
		}
		
	len=strlen(temp);
	if(temp[len-1]=='\n')
		temp[len-1]=0; /*places the null terminating character after word*/
		
		/*separates clues from word*/
		strcpy(clue,strtok(temp, "%"));
		/*
		strcpy(phrase,strtok(NULL,"%"));*/
	char tmp[WORD_LENGTH];
	strcpy(tmp,strtok(NULL,"%"));
	strcpy(phrase, tmp + 1);
	strcpy(puzzle,phrase);
 
 
		/*strcpy(puzzle,phrase);*/
	
		while(i<strlen(puzzle)){
			if(isalpha(puzzle[i])){
				puzzle[i] = '*'; /*hides word*/
				}
				++i;
			}
	fclose(phraseFile);	/*closes file*/	
	return i;
}
 
int main(){
	char phrase[WORD_LENGTH]; /*word that is chosen*/
	char puzzle[WORD_LENGTH]; /*copy of phrase that is converted to *s*/
	char clue[WORD_LENGTH]; /*corresponding clue in phrase file*//*length of phrase to chosen*/
	int puzzle_length;
	int round;
	
	char num_players[5]; /*number that user types in*/
	int solved = 0;
	int current_player;
	int player_scores[NUM_PLAYERS] = {0};
	int a=0; /*variable that user types in that is saved to string num_player*/
	
 	srand(time(0)); /*condition to start randomization*/
	current_player=rand()%3+1; /*what player the game starts with*/
	printf("\n");
	printf("Welcome to WHEEL OF FORTUNE!!!!!\n");
	printf("\n");
 
	/* Get the number of players */
	while (a< 1 || a > 3){
		printf("\nHow many players will be playing the game (1-3)? ");
		if(fgets(num_players,5,stdin)){
			sscanf(num_players, "%d", &a);
			}
		printf("\n");
		} 
 
	/* Get the puzzle */
	
	for(round=0; round<3; ++round){
	puzzle_length = initialize_array(phrase, puzzle, clue); /*get the puzzle*/
	
	current_player = rand()% a; /*starts with random player, not necessarily player 1*/
 
	while (solved == 0) /*while the puzzle isnt solved*/{
		solved = player_turn(a, current_player, player_scores, phrase, puzzle, clue, puzzle_length);
		
				if (solved == 0){
					++current_player;
					if (current_player == a){
					current_player = 0;
					}
				}
			}
			solved=0;
			current_player = rand()% a;	 /*chooses player for next round*/
								
	}
	printf("Final Scores:\n");
	print_score(a, player_scores);
 
/*Print who is the winner*/
 
	if(player_scores[0]>player_scores[1] && player_scores[0]>player_scores[2])
		printf("Player 1 is the winner with %d points!\n", player_scores[0]);
	if(player_scores[1]>player_scores[0] && player_scores[1]>player_scores[2])
		printf("Player 2 is the winner with %d points!\n", player_scores[1]);
	if(player_scores[2]>player_scores[0] && player_scores[2]>player_scores[1])
		printf("Player 3 is the winner with %d points!\n", player_scores[2]);
	if(player_scores[0]==player_scores[1] && player_scores[0]>player_scores[2])
		printf("Players 1 and 2 have tied with a score of %d\n", player_scores[0]);
	if(player_scores[0]>player_scores[1] && player_scores[0]==player_scores[2])
		printf("Players 1 and 3 have tied with a score of %d\n", player_scores[0]);
	if(player_scores[1]==player_scores[2] && player_scores[1]>player_scores[0])
		printf("Players 2 and 3 have tied with a score of %d\n", player_scores[1]);
 
 
 
			
		
		return(0);
}