Calender program...

I am so embarassed (),
I don't normally ask for help with my homework, but I just can't figure this one out..

this is the basic layout we are supposed to use:

   Sun     Mon     Tue     Wed     Thu     Fri     Sat
*********************************************************
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*********************************************************
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*********************************************************
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*********************************************************
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*********************************************************
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*       *       *       *       *       *       *       *
*********************************************************

we are supposed to ask for the number of days in a month, and the day in which the month starts..

then display it properly.


here is my code:
it all works fine, but I just can't figure out how to display the dates in the correct places...
I have tried so many different things, and I can't get it...

BTW, I am using Borland Turbo C++ 4.5, which has some non-ANSI functions, such as gotoxy, when goes to a point, and also clrscr, which clears the screen.

/*
Dennis Wrenn
12/8/00
Computer Science Period 6
e5-11
*/
#include <iostream.h>
#include <conio.h>
#include <inc.h>


void showcal(int numdays, int startday);
void dowords();

int main()
{
int numday, startday;
cout << "Enter the number of days in the month(30 or 31): ";
cin >> numday;
cout << "Enter the number for the day the month starts(1 = sunday, etc): ";
cin >> startday;

clrscr();

showcal(numday, startday);
return 0;
}

void showcal(int numdays, int startday)
{
	int i = 0;
	int odd = 0;

	dowords();

	for (i = 1; i <= 57; i += 8)
	{
		drawbar('v', i, 2, 21, '*');
	}

	for (i = 2; i <= 22; i +=4)
	{
		drawbar('h', 1, i, 57, '*');
	}

}


void dowords()
{
	gotoxy(4,1);
	cout << "Sun";

	gotoxy(12,1);
	cout << "Mon";

	gotoxy(20,1);
	cout << "Tue";

	gotoxy(28,1);
	cout << "Wed";

	gotoxy(36,1);
	cout << "Thu";

	gotoxy(44,1);
	cout << "Fri";

	gotoxy(52,1);
	cout << "Sat";
}

you may have seen a wierd header file in there..... inc.h
I wrote that so I didn't have to include my drawbar function in all the projects:

#include <conio.h>
void drawbar(char d, int l, char c)
{
int i = 0;
switch (d)
{
case 'v':
//verticle
for(i = 0; i < l; i++)
{
cout << c << "\n";
}
break;
case 'h':
//horizontal
default:
for(i = 0; i < l; i++)
{
cout << c;
}
break;
}
cout << endl;

}

void drawbar(char d, int x, int y, int l, char c)
{
int i = 0;
int y2 = y;
gotoxy(x,y);
switch (d)
{
case 'v':
//verticle
for(i = 0; i < l; i++)
{
gotoxy(x,y2);
y2++;
cout << c << "\n";
}
break;
case 'h':
//horizontal
default:
for(i = 0; i < l; i++)
{
cout << c;
}
break;
}
cout << endl;
}

I would like help on this soon, as it's bugging the crap out of me, but you can take your time, because I am way ahead of the class, and this is the 11th excersize in the book, and everybody else is still on #1...



Thanks a lot....

Dennis Wrenn

[kedaman]

I don't see what the problem is dennis. I haven't pasted the code and run it but why don't you do it like this:
1. Draw the table first.
2. Then put in the numbers using gotoxy.

The number for each box should be X+Y*7+Start whereas if that number<1 or number>dayisinmonth then don't display it

[HarryW]

Well i reckon this should do it:

(I don't have Borland)

#include <iostream>
#include <iomanip>
using namespace std;

char *weekdays[7] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
int daysinmonth, startday;

void getinput()
{	cout << "How many days in the month?  ";
	cin >> daysinmonth;
	cout << endl << "On which day does the month begin? (Sun = 1, Mon = 2 etc.)  ";
	cin >> startday;
	cout << endl << endl;
}

void drawheaders()
{	for(int x = 0; x<7; x++)
		cout << "   "<< weekdays[x] << "  ";
	cout << endl;
}

void drawline()
{	for(int x = 0; x<57; x++)
		cout << '*';
	cout << endl;
}

void drawcolumns()
{	for(int x = 0; x<7; x++)
		cout << "*       ";
	cout << '*' << endl;
}

void drawdays(int weekbegin)
{	for(int x = 0; x<7; x++)
	{	cout << "* "; 
		if((weekbegin+x-startday+2 > daysinmonth) || (weekbegin+x-startday+2 < 1))
			cout << "   ";
		else
			cout << setw(3) << weekbegin+x-startday+2;
		cout << "   ";
	}
	cout << '*' << endl;
}


void main()
{	
	getinput();
	drawheaders();
	drawline();
	for(int y = 0; y<5; y++)
	{	drawcolumns();
		drawdays(y*7);
		drawcolumns();
		drawline();
	}
	if (daysinmonth + startday > 35)
	{	drawcolumns();
		drawdays(35);
		drawcolumns();
		drawline();
	}

}

Thanks harry,

[theman32x]

dennis you wouldn't happen to live in West New York, NJ

cause i have that same prob too

[theman32x]

is that the easiest way to do it?

cause i sure know that we haven't learn that much

i wonder how this teacher of mine expects us to do it

Nope, I don't..
I live in Arlington, Virginia

is your textbook called "a guide to programming in C++" printed by lawrenceville press?

[theman32x]

nope my book is called "introduction to computer science using c++"