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Calender Program

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closed account (oG8qGNh0)
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#include <iostream>
#include <iomanip>
using namespace std;

typedef int Bool;

// Converts 0 to S , 1 to M , etc
char whatDay (int);

// Check for leap years
Bool isLeapYear (int);

// Takes the number of the month, a flag saying whether or not it is a leap year
int numOfDaysInMonth (int,Bool);

void printHeader (int);

// Takes the number of the month and the first day, prints, and updates the first day of the next month
void printMonth (int, int&);

// Prints the needed number of spaces
void skip (int);

// Prints leading spaces in monthly calendar
void skipToDay (int);

// Terminates program incase of errors
void disaster ();

int main () {

int year, firstDayInCurrentMonth;
Bool leap;
int currentMonth = 1; // Starts at January
int numDays;

cout << "What year?: ";
cin >> year;
cout << "On what day does January 1st fall? " << endl;
cout << "Enter (0 for Sunday, 1 for Monday, etc.) ";

leap = isLeapYear (year);
skip (9); cout << year << endl;

while (currentMonth <= 12) {
numDays = numOfDaysInMonth (currentMonth, leap);
printHeader (currentMonth);
printMonth (numDays, firstDayInCurrentMonth);
cout << endl << endl << endl;
currentMonth = currentMonth + 1;
}
cout << endl;
void disaster () {
cout << "Disaster: Exiting ..." << endl;
exit (-1);
}
}
void skip (int i) {
while (i > 0) {
cout << " ";
i = i - 1;
}
}
char whatDay (int d) {
if (d==0) return('S');
else if (d==1) return ('M');
else if (d==2) return ('T');
else if (d==3) return ('W');
else if (d==4) return ('T');
else if (d==5) return ('F');
else if (d==6) return ('S');
else disaster ();
}
Bool isLeapYear (int y) {
return ((y % 4) == 0); // Simplified
}
void printHeader (int m) {
if (m == 1) (skip(7); cout << "January" << endl; )
else if (m == 2) (skip(7); cout << "February" << endl; )
else if (m == 3) (skip(7); cout << "March" << endl; )
else if (m == 4) (skip(7); cout << "April" << endl; )
else if (m == 5) (skip(7); cout << "May" << endl; )
else if (m == 6) (skip(7); cout << "June" << endl; )
else if (m == 7) (skip(7); cout << "July" << endl; )
else if (m == 8) (skip(7); cout << "August" << endl; )
else if (m == 9) (skip(7); cout << "September" << endl; )
else if (m == 10) (skip(7); cout << "October" << endl; )
else if (m == 11) (skip(7); cout << "November" << endl; )
else if (m == 12) (skip(7); cout << "December" << endl; )
else disaster ();

cout << " Su M T W Th F Sa" << endl;
cout << "_________________" << endl;
}
int numOfDaysInMonth (int m, Bool leap) {
if (m == 1) return (31); 
else if (m == 2) if (leap) return (29); else return(28);
else if (m == 3) return(31);
else if (m == 4) return(30);
else if (m == 5) return(31);
else if (m == 6) return(30);
else if (m == 7) return(31);
else if (m == 8) return(31);
else if (m == 9) return(30);
else if (m == 10) return(31);
else if (m == 11) return(30);
else if (m == 12) return(31);
else disaster ();
}
void skipToDay (int d) {
skip(3*d);
}
void printMonth (int numDays, int& weekDay) {
int day = 1;
skipToDay(weekDay);
while (day <= numDays) {
cout << setw(2) << day << " ";
if (weekDay == 6 ) {
cout << endl;
weekDay = 0;
}
else weekDay = weekDay + 1;
day = day + 1;
}
}


Sorry About NOT using code tags... Error in lines 53 and 78. How can I make that disappear?
doug4 (1538)
1. You used code tags. Good. However, codd tags preserve indentation, which makes the code much more readable. You evidently don't use indentation. You should, and your teacher should require it. If you want to make it easier for us to provide you with comments, please indent your code.

2.
Error in lines 53 and 78.
Well, what are they? Paste the error message here, too, and we can all read them.
salem c (3700)
@naveenmmenon
This is what indentation should look like.
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#include <iostream>
#include <iomanip>
using namespace std;

typedef int Bool;

// Converts 0 to S , 1 to M , etc
char whatDay(int);

// Check for leap years
Bool isLeapYear(int);

// Takes the number of the month, a flag saying whether or not it is a leap year
int numOfDaysInMonth(int, Bool);

void printHeader(int);

// Takes the number of the month and the first day, prints, and updates the first day of the next month
void printMonth(int, int &);

// Prints the needed number of spaces
void skip(int);

// Prints leading spaces in monthly calendar
void skipToDay(int);

// Terminates program incase of errors
void disaster();

int main()
{

  int year, firstDayInCurrentMonth;
  Bool leap;
  int currentMonth = 1;         // Starts at January
  int numDays;

  cout << "What year?: ";
  cin >> year;
  cout << "On what day does January 1st fall? " << endl;
  cout << "Enter (0 for Sunday, 1 for Monday, etc.) ";

  leap = isLeapYear(year);
  skip(9);
  cout << year << endl;

  while (currentMonth <= 12) {
    numDays = numOfDaysInMonth(currentMonth, leap);
    printHeader(currentMonth);
    printMonth(numDays, firstDayInCurrentMonth);
    cout << endl << endl << endl;
    currentMonth = currentMonth + 1;
  }
  cout << endl;
  void disaster() {
    cout << "Disaster: Exiting ..." << endl;
    exit(-1);
  }
}

void skip(int i)
{
  while (i > 0) {
    cout << " ";
    i = i - 1;
  }
}

char whatDay(int d)
{
  if (d == 0)
    return ('S');
  else if (d == 1)
    return ('M');
  else if (d == 2)
    return ('T');
  else if (d == 3)
    return ('W');
  else if (d == 4)
    return ('T');
  else if (d == 5)
    return ('F');
  else if (d == 6)
    return ('S');
  else
    disaster();
}

Bool isLeapYear(int y)
{
  return ((y % 4) == 0);        // Simplified
}

void printHeader(int m)
{
  if (m == 1)
    (skip(7);
     cout << "January" << endl;
      )
      else
if (m == 2)
  (skip(7);
   cout << "February" << endl;
      )
      else
if (m == 3)
  (skip(7);
   cout << "March" << endl;
      )
      else
if (m == 4)
  (skip(7);
   cout << "April" << endl;
      )
      else
if (m == 5)
  (skip(7);
   cout << "May" << endl;
      )
      else
if (m == 6)
  (skip(7);
   cout << "June" << endl;
      )
      else
if (m == 7)
  (skip(7);
   cout << "July" << endl;
      )
      else
if (m == 8)
  (skip(7);
   cout << "August" << endl;
      )
      else
if (m == 9)
  (skip(7);
   cout << "September" << endl;
      )
      else
if (m == 10)
  (skip(7);
   cout << "October" << endl;
      )
      else
if (m == 11)
  (skip(7);
   cout << "November" << endl;
      )
      else
if (m == 12)
  (skip(7);
   cout << "December" << endl;
      )
      else
  disaster();

  cout << " Su M T W Th F Sa" << endl;
  cout << "_________________" << endl;
}

int numOfDaysInMonth(int m, Bool leap)
{
  if (m == 1)
    return (31);
  else if (m == 2)
    if (leap)
      return (29);
    else
      return (28);
  else if (m == 3)
    return (31);
  else if (m == 4)
    return (30);
  else if (m == 5)
    return (31);
  else if (m == 6)
    return (30);
  else if (m == 7)
    return (31);
  else if (m == 8)
    return (31);
  else if (m == 9)
    return (30);
  else if (m == 10)
    return (31);
  else if (m == 11)
    return (30);
  else if (m == 12)
    return (31);
  else
    disaster();
}

void skipToDay(int d)
{
  skip(3 * d);
}

void printMonth(int numDays, int &weekDay)
{
  int day = 1;
  skipToDay(weekDay);
  while (day <= numDays) {
    cout << setw(2) << day << " ";
    if (weekDay == 6) {
      cout << endl;
      weekDay = 0;
    } else
      weekDay = weekDay + 1;
    day = day + 1;
  }
}


First problem, just trying to indent it.

$ indent -kr -nut -ts2 -i2 -l120 foo.cpp
indent: foo.cpp:79: Error:Unmatched 'else'
indent: foo.cpp:80: Error:Unmatched 'else'
indent: foo.cpp:81: Error:Unmatched 'else'
indent: foo.cpp:82: Error:Unmatched 'else'
indent: foo.cpp:83: Error:Unmatched 'else'
indent: foo.cpp:84: Error:Unmatched 'else'
indent: foo.cpp:85: Error:Unmatched 'else'
indent: foo.cpp:86: Error:Unmatched 'else'
indent: foo.cpp:87: Error:Unmatched 'else'
indent: foo.cpp:88: Error:Unmatched 'else'
indent: foo.cpp:89: Error:Unmatched 'else'
indent: foo.cpp:90: Error:Unmatched 'else'

Look carefully, in every statement block of printHeader, you've used ( ) instead of { } to denote the statement block of each conditional.

Also look at line 55.
Do you see that your disaster function is actually scoped within main().

You NEED to slow down and compile much more often than you're apparently doing.
For example.
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void printHeader(int m)
{
  if (m == 1)
    (skip(7);
     cout << "January" << endl;
      )
}

This should have been a point you should have compiled and tested the code to make sure it's what you want.

Copy/pasting the same mistake a dozen times just means you have to fix 12 things rather than one thing, when you finally discover that your original edit was wrong.





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