/*
 * Prog_Practice_W6.c
 *
 *  Created on: Jan 21, 2022
 *      Author: johnsontimoj
 */
////////////////////////////
//
// programming practice - fns, pointers, while, for
//
///////////////////////////
//
// Simple guessing game
//
////////////////////////////
#include <stdio.h>
#include <stdlib.h>

void get_range(int * L, int * H);
int create_target(int bot, int top);
int get_limit(void);
void play_game(int targ, int lim);
void get_guess(int cnt, int * aa);


int main(void){
	setbuf(stdout, NULL); 	// printf issue with code composer

	char play;		// flag to stop play yY
	int low;		// range variables
	int high;
	int target;		// target to guess
	int limit;		// number of allowed tries

	// splash
	printf("##############################\n");
	printf("\n");
	printf("Welcome to Dr. Johnson's Guessing Game\n");
	printf("\n");
	printf("##############################\n");

	// create conditional loop to allow/stop play
	play = 'y';
	while((play == 'y') || (play == 'Y')){
		// get the range for play
		get_range(&low, &high);

		// create the target random number
		target = create_target(low, high);

		// set limit on # of tries
		limit = get_limit();

		// play game
		play_game(target, limit);

		// continue ?
		printf("Would you like to try again? y or n: ");
		scanf(" %c", &play);
	}// end while

	// splash
	printf("Thank you for playing - come back any time!");

	return 0;
}// end main

void get_range(int * L, int * H){
	// Function to get the range for the target in the game
	do{
		printf("\nPlease enter the low and high range values for the game: ");
		scanf("%i %i", L, H);	// note L and H are pointers so no &
	} while((*L < 0) || (*H < 0) || (*L >= *H));

	return;
}// end get_range

int create_target(int bot, int top){
	// function to generate the target number

	int tmp;
	int target;

	// create a random number 0 - RAND_MAX
	tmp = rand();

	// scale the number to bot - top
	target = bot + (tmp % (top - bot));

	return target;
}// end create target

int get_limit(void){
	// function to get the number of tries
	int lim;

	printf("Please enter the maximum number of allowed tries: ");
	scanf("%i", &lim);

	return lim;
}// end get_lim

void play_game(int targ, int lim){
	// function to allow a specific number of guesses
	// and test for correct or not
	int i;
	int guess;
	int win;		// flag for winning
	win = 0;		// default case

	for(i = 0; i < lim; i++){
		get_guess(i, &guess);

		if(guess < targ)
			printf("too low\n");
		else if(guess > targ)
			printf("too high\n");
		else{
			win = 1;
			i = lim - 1;		// cause loop to terminate (other ways to do this)
		}// end if
	}// end for

	if(win == 0)
		printf("\nSorry but you FAILED!\n\n");
	else
		printf("\nWINNER WINNER\n\n");

	return;
}// end play_game

void get_guess(int cnt, int * aa){
	// helper function to read in the guess
	printf("Guess %i: ", cnt + 1);
	scanf("%i", aa);	// note aa is a pointer so no &

	return;
}// end get_guess