Calendars

[aosmith]

update: down to one error
I'm justt trying to finish up an assignment and i hit a couple snags... anyways we have to print a calendar for the years 2008 - 2099 (depending on the year a user inputs)... anyways here's how im (trying to) do it. Its a mod of a previous assignment:
(updated)

#include <iostream>
#include <fstream>
#include <string>

using namespace std;
int yearload (int* days[12], int* startday[12], int year)
{
int after8=year-2008;
while (after8>0, after8++)
{
int i = 0;
while (i<12, i++)
{
if (year%4==0)
{
*startday[i]=(*startday[i]+366)%7;
}
else
{
*startday[i]=(*startday[i]+365)%7;
}
}
}
if (year%4 == 0)
{
int days[12]={31,29,31,30,31,30,31,31,30,31,30,31};
}
else
{
int days[12]={31,28,31,30,31,30,31,31,30,31,30,31};
}
return 0;
}
void pmonth (string month, int days, int day, int year)
{
//open cal.txt, and go to eof
ofstream cal ("cal.txt", ios::app);
//print first week and white space
cal<<month<<"\t\t"<<year<<"\n S M T W T F S\n";
int j = day + 1;
//print whitespace to move the 1st to the right spot
while (day > 0)
{
cal<<" ";
day--;
}

int date = 1;
while (date < days + 1)
{
//handles a new line
if ( j < 8 )
{
if (date < 10)
{
//theres an extra space to make everything look right (single digits)
cal<<" "<<date;
j++;
date++;
}
else
{
cal<<" "<<date;
j++;
date++;
}
}
//print a new line if we've run beyond the end of the week
else
{
cal<<"\n";
j=1;
}
}
//at the end of the month print two cr's
if (date=date+1)
cal<<"\n\n";

}
int main()
{
int year=2008;
cout<<"Enter a year: ";
cin>>year;
/*var ref:
month "2008"
"S M T W T F S"
1 2 3 4 5 6 7 <--Day
*/
string months[12]={"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
//these are true for 2008 (or year "0" in our model)
int startday[12]={2,5,6,2,4,0,2,5,1,3,6,1};
int days[12]={31,29,31,30,31,30,31,31,30,31,30,31};
yearload (&days, &startday[12], year);
int day=2;
int i = 0;
while (i<12, i++)
{
pmonth (months[i], days[i], startday[i], year);
}
return 0;

}


... I'm getting a laundry list of compile errors mostly relating to pointers. ideas?

Update: down to one

Here's a list of errors:

1>c:\users\alex smith\documents\visual studio 2008\projects\cis150a3\cis150a3\calendar.cpp(94) : error C2664: 'yearload' : cannot convert parameter 1 from 'int (*)[12]' to 'int *'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

[7stud]

1) How do you declare an array that will hold 12 integers?

2) How do you declare an array that will hold 12 pointers(to integers)?

[Paul McKenzie]

update: down to one error
I'm justt trying to finish up an assignment and i hit a couple snags...

if (year%4 == 0)
{
int days[12]={31,29,31,30,31,30,31,31,30,31,30,31};
}
else
{
int days[12]={31,28,31,30,31,30,31,31,30,31,30,31};
}
Explain in your own words what this code does. It certainly doesn't do what you think it should have done.

Regards,

Paul McKenzie

[aosmith]

It should load an array with the number of days in each month depending on if that month is a leap year (and since our time range is only 2008-2099 thats the only rule we need to apply (evenly divisible by 4)).

[aosmith]

1) How do you declare an array that will hold 12 integers?

2) How do you declare an array that will hold 12 pointers(to integers)?

int days[12]={31,29,31,30,31,30,31,31,30,31,30,31};

int* days[12]

[MrViggy]

if (year%4 == 0)
{
int days[12]={31,29,31,30,31,30,31,31,30,31,30,31};
}
else
{
int days[12]={31,28,31,30,31,30,31,31,30,31,30,31};
}

Another hint, variable scoping....

Viggy

[Lindley]

Also, the leap year rule is a bit more complicated than that. In this case it's fine, just FYI.