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#include <iostream>
#include <stdlib.h>
#include <ctype.h>
#include <time.h>
using namespace std;
enum Month {Jan, Feb, Mar, Apr, May, Jun,
Jul, Aug, Sep, Oct, Nov, Dec}; //defines month
int getYear(); // has the user enter a valid year
bool isLeap(int year); // check for leap years
void dayName(); // prints the names for the day of the week
void monthNameHeader(int year); // puts head for the month name
int startDay(int year); // decides what week day Jan starts on
int monthCount(int counter); // how many days are in each month
void newMonth(int startDOW); // what day of the week new month starts on
void printAll(int year); // puts everything together, prints to screen
int year = 0; // uesr inputed year || rand gen per 0
int counter = 1; // counter for month name & # days in month
int startDOW, // day of the week Jan starts on
wrap, // check for if weekday is Saturday
daysInMonth; // total days in each month
int weekNumber = 0; // flag for first week of the month
int main()
{
year = getYear(); // has user enter year number
printAll(year);
return 0;
}
int getYear() //prompts the user to enter a valid year
{
char c;
srand(time(NULL));
cout << "Enter the year";
do { // gets whole number value
cin.get(c);
if(isdigit(c))
{
year=year*10;
year +=(int)(c-'0');
}
} while(c!='\n');
return year;
}
bool isLeap(int year) // checking for possible leap year
{
if (year % 400 == 0)
return true;
if (year % 100 == 0)
return false;
if (year % 4 == 0)
return true;
return false; // else return false
}
void dayName()
{
string day_str[7]={
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
cout << " ";
for(int i=0;i<7;i++){
cout << day_str[i] << " ";
}
cout << endl;
cout << "------------------------------------" << endl;
}
void monthNameHeader(int counter)
{
string month_str[12]={
"Janunary", "Feburary", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"
};
cout << " "<<month_str[counter]<<" " << endl;
}
int monthCount(int counter) // how many days are in the month
{
int monthDays[12]={31,28,31,30,31,30,31,31,30,31,30,31};
daysInMonth=monthDays[counter];
return daysInMonth;
}
int startDay(int year)
{
startDOW = (year + (year - 1 ) /4 - (year - 1) / 100 + (year - 1) /400) %7;
return startDOW; // formula for what DoWeek year starts on
}
void printAll(int year)
{
for (counter = 1; counter <= 12; counter++)
{
monthNameHeader(counter); // prints month day
dayName(); // prints the name of days
if (counter==1)
wrap = startDay(year) ; // what day Jan starts on
else
startDOW = wrap; // what day other months start on
cout << " ";
for (int loopCount = 0; loopCount < startDOW; loopCount++)
{
cout << " "; // how many space to indent new month
}
monthCount(counter); // how many days in month
for (int dayCounter=1;dayCounter<=daysInMonth; dayCounter++)
{
if (wrap == 7) //if Saturday, carriage return
{
cout << "\n ";
wrap = 0; //resets day of week counter
weekNumber++; //no longer first week of month
}
if (dayCounter<10) //adds space for single digit days
cout << " ";
cout << dayCounter << " "; //prints the day #
wrap++;
}
// cout << "\nthis month starts on day number " << startDOW; *testing*
// cout << "\ndays in this month are " << daysInMonth; *testing*
cout << "\n\n";
cout << endl;
} // end BIG for loop
}
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