/*
	Course Number   : ISYS 116
	Student Name    : Jason Gradziel
	Student Number  : 826-135-535
	Professors Name : Gene Rychlewski
	Class Name      : Thursday
	Lab Title       : GPA2
	*/

#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <dos.h>

/* Global Variables */
char   fname[16],
       lname[21],
       snum[12], //= "___-___-___",
       ccode[9];
int    numsubjt,
       mark,
       credits,
       wmark,
       num,
       flag=1;
double total,
       totalcrdt,
       GPA;

/* Function Prototypes */
/* Mainline functions */
int setup();
int process();
int wrapup();
/* Subroutine functions */
void title();
void getnumsubjects();
void prtheaders();
void prtnumsubjects();
void prttotal();
void getinput();
void calcs();
void final();
void prtGPAmsg();
void getyesno();

/* Mainline */
void main(void)
{
	while (flag==1)
	{
		total=0; totalcrdt=0; GPA=0;
		for (int a=0; a<11; a++)
			snum[a]= ' ';
		setup();
		process();
		wrapup();
		getyesno();
	}

	/* clean up */
	fflush(stdin);
	//getch();
	clrscr();
}

/* Subroutines */
int setup()
{
	fflush(stdin);
	title();
	getnumsubjects();
	prtheaders();
	prtnumsubjects();
	return 0;
}

int process()
{
	for(num=0; num<numsubjt; num++)
	{
		getinput();
		calcs();
		prttotal();
	}
	return 0;
}

int wrapup()
{
	final();
	prtGPAmsg();
	return 0;
}

/* Lower level subroutines */
void title()
{
	clrscr();
	gotoxy(30,2);	printf("***********************");
	gotoxy(30,3);	printf("* GRADE POINT AVERAGE *");
	gotoxy(30,4);	printf("***********************");
}

void getnumsubjects()
{
	gotoxy(18,10);	printf("Enter in the following :");
	gotoxy(20,11);	printf("First Name");
	gotoxy(31,11);	gets(fname);
	gotoxy(20,12);	printf("Last Name");
	gotoxy(31,12);	gets(lname);
	gotoxy(18,13);	printf("Student Number %s",snum);
	gotoxy(33,13);	snum[0] = getche();
			snum[1] = getche();
			snum[2] = getche();
	gotoxy(37,13);	snum[4] = getche();
			snum[5] = getche();
			snum[6] = getche();
	gotoxy(41,13);	snum[8] = getche();
			snum[9] = getche();
			snum[10] = getche();
	gotoxy(18,14);	printf("How many subjects are you taking? (max 7) : ");
			scanf("%d",&numsubjt);
	if (numsubjt > 7)
		numsubjt = 7;
}

void prtheaders()
{
	clrscr();
	title();
	gotoxy(30,6);	printf("%s %s %s",fname,lname,snum);

	gotoxy(10,10);	printf("#");
	gotoxy(15,9);	printf("Course");
	gotoxy(16,10);	printf("Code");
	gotoxy(30,10);	printf("Mark");
	gotoxy(40,10);	printf("Credits");
	gotoxy(50,9);	printf("Weighted");
	gotoxy(51,10);	printf("Mark");
	gotoxy(10,11);	printf("=");
	gotoxy(15,11);	printf("======");
	gotoxy(30,11);	printf("====");
	gotoxy(40,11);	printf("=======");
	gotoxy(51,11);	printf("====");
}

void prtnumsubjects()
{
	for (num=0; num<numsubjt; num++)
	{
		gotoxy(10,num+12);	printf("%d",num+1);
	}
}

void prttotal()
{
	gotoxy(30,13+numsubjt);	printf("Totals");
	gotoxy(41,13+numsubjt);	printf("%.0f",totalcrdt);
	gotoxy(51,13+numsubjt);	printf("%.0f",total);
}

void getinput()
{
	gotoxy(15,num+12);	fflush(stdin);	gets(ccode);
	gotoxy(31,num+12);			scanf("%d",&mark);
	gotoxy(41,num+12);			scanf("%d",&credits);
}

void calcs()
{
	totalcrdt += credits;
	wmark = mark * credits;
	gotoxy(51,num+12);	printf("%d",wmark);
	total += wmark;
}

void final()
{
	GPA = total / totalcrdt;
	gotoxy(20,num+15);
	printf("Your Grade Point Average is %.2f",GPA);
}

void prtGPAmsg()
{
	if (GPA < 60)
	{
		gotoxy(25,num+16);
		printf("Failing!...Please see your coordinator.");
	}
	else if (GPA > 79)
	{
		gotoxy(25,num+16);
		printf("Congratulations!...You have Honours!");
	}
	else
	{
		gotoxy(25,num+16);
		printf("Passing!...Keep up the good work.");
	}
}

void getyesno()
{
	int flag2=1;
	while (flag2==1)
	{
	char quit,y,Y,n,N;
	printf("\n\n\tDo you want to quit?(Y/N) ");
	quit=getch();
	if (quit == 'Y' || quit == 'y')
		{
		printf("\n\tBye Bye!");
		flag = 0; flag2=0;
		delay(500);
		//getch();
		}
	else if (quit == 'N' || quit == 'n')
		{
		printf("\n\tO.K.");
		delay(500);
		flag2=0;
		//getch();
		}
	else
		{
		printf("\n\tThat is incorrect.");
		delay(500);
		//getch();
		}
	}
}