Problem with dates and years

squik (11)
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/*

Write a program that checks the validity of a date. The date is entered as separate numbers for 
the month, day and year. 
For example, if the date was March 16th, 2008, the user would enter 3 followed by 16 followed 
by 2008. The program checks that: 

• the month is a valid number for a month 

• the number of days in the month is valid for that month. 

• If the user entered February 29th

, you must check if the the year is a valid leap year.
The program just outputs the date and tells the user if the date is valid or not. 
The program contains four functions:

• The main function.

• A function that gives instructions to the user about how to enter the date 

• A function that is sent a month and a day and returns a Boolean value to represent 
whether that is a valid day for that month. This function should use a switch statement.

• The leap year function that determines if this is a leap year. This is  your leap year 
function from last week.
*/

#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

// declaring
int Day = 0;
int Month = 0;
int Year = 0;
bool leapYear (int);


int main(int argc, char *argv[])
{
    // outputting messages to the user
    cout << "Lets check your dates shall we?" << endl;
    cout << "Please enter in a two(2) digit number for the month." << endl;
    cin >> Month;
    cout << "Please enter in a two(2) digit number for the day." << endl;
    cin >> Day;
    cout << "Please enter in a four(4) digit number for the year." << endl;
    cin >> Year;
    
    
    
    
    
    system("PAUSE");
    return EXIT_SUCCESS;
}

switch(Month)
{
       case 01:
            if (Day == 1 ... 31)
               cout << "January" << Day << "th," << Year << "," << endl;
            break;
       case 02:
            if (Day == 1 ... 28)
               cout << "February" << Day << "th," << Year << "," << endl;
            else if (Day == 29)
               leapYear(Day);  
            break;
       case 03:
            if (Day == 1 ... 31)
               cout << "March" << Day << "th," << Year << "," << endl;
            break;
       case 04:
            if (Day == 1 ... 30)
               cout << "April" << Day << "th," << Year << "," << endl;
            break;
       case 05:
            if (Day == 1 ... 31)
               cout << "May" << Day << "th," << Year << "," << endl;
            break;
       case 06:
            if (Day == 1 ... 30)
               cout << "June" << Day << "th," << Year << "," << endl;
            break;
       case 07:
            if (Day == 1 ... 31)
               cout << "July" << Day << "th," << Year << "," << endl;
            break;
       case 08:
            if (Day == 1 ... 31)
               cout << "August" << Day << "th," << Year << "," << endl;
            break;
       case 09:
            if (Day == 1 ... 30)
               cout << "September" << Day << "th," << Year << "," << endl;
            break;
       case 10:
            if (Day == 1 ... 31)
               cout << "October" << Day << "th," << Year << "," << endl;
            break;
       case 11:
            if (Day == 1 ... 30)
               cout << "November" << Day << "th," << Year << "," << endl;
            break;
       case 12:
            if (Day == 1 ... 31)
               cout << "December" << Day << "th," << Year << "," << endl;
            break;
}


// leap year bool
bool leapYear (int)
{
    if ((( Year % 4 == 0) && (! ( Year % 100 == 0))) || (( Year % 4 == 0) && (! ( Year % 100 == 0))&&( Year % 400 == 0))) 
     return true;
      
    else
        return false;
        }



61 expected unqualified-id before "switch"
61 expected `,' or `;' before "switch"

93:13 invalid digit "8" in octal constant
97:13invalid digit "9" in octal constant

also what else would i have to add to where?
please help

edit : updated code
Last edited on
sohguanh (1236)
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} // this curly brace end the main function should move below

switch(Month)
{


In C,C++, when you put 08 it interpret as octal number, 0x8 it interpret as hexadecimal number so for your case you just put 8,9,10 etc.

Also does C/C++ support syntax like 1...31 ? Usually we write as if (Day>=1 && Day<=31)
squik (11)
thank you!

now i edited the code to this... and still getting a problem...

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/*

Write a program that checks the validity of a date. The date is entered as separate numbers for 
the month, day and year. 
For example, if the date was March 16th, 2008, the user would enter 3 followed by 16 followed 
by 2008. The program checks that: 

• the month is a valid number for a month 

• the number of days in the month is valid for that month. 

• If the user entered February 29th

, you must check if the the year is a valid leap year.
The program just outputs the date and tells the user if the date is valid or not. 
The program contains four functions:

• The main function.

• A function that gives instructions to the user about how to enter the date 

• A function that is sent a month and a day and returns a Boolean value to represent 
whether that is a valid day for that month. This function should use a switch statement.

• The leap year function that determines if this is a leap year. This is  your leap year 
function from last week.
*/

#include <cstdlib>
#include <iostream>
#include <cmath>

using namespace std;

// declaring
int Day = 0;
int Month = 0;
int Year = 0;
bool leapYear (int);


int main(int argc, char *argv[])
{
    // outputting messages to the user
    cout << "Lets check your dates shall we?" << endl;
    cout << "Please enter in a two(2) digit number for the month." << endl;
    cin >> Month;
    cout << "Please enter a number for the day (1 - 12)." << endl;
    cin >> Day;
    cout << "Please enter in a four(4) digit number for the year." << endl;
    cin >> Year;
    
    
    switch(Month)
{
       case 1:
            if (Day>=1 && Day<=31)
               cout << "January" << Day << "th," << Year << "," << endl;
            break;
       case 2:
            if (Day>=1 && Day<=28)
               cout << "February" << Day << "th," << Year << "," << endl;
            else if (Day == 29)
               leapYear(Year)  
               cout << "February" << Day << "th," << Year << "," << "Is also a leap year!" endl;
               else
               cout << "Invalid date." << endl;
            break;
       case 3:
            if (Day>=1 && Day<=31)
               cout << "March" << Day << "th," << Year << "," << endl;
            break;
       case 4:
            if (Day>=1 && Day<=30)
               cout << "April" << Day << "th," << Year << "," << endl;
            break;
       case 5:
            if (Day>=1 && Day<=31)
               cout << "May" << Day << "th," << Year << "," << endl;
            break;
       case 6:
            if (Day>=1 && Day<=30)
               cout << "June" << Day << "th," << Year << "," << endl;
            break;
       case 7:
            if (Day>=1 && Day<=31)
               cout << "July" << Day << "th," << Year << "," << endl;
            break;
       case 8:
            if (Day>=1 && Day<=31)
               cout << "August" << Day << "th," << Year << "," << endl;
            break;
       case 9:
            if (Day>=1 && Day<=30)
               cout << "September" << Day << "th," << Year << "," << endl;
            break;
       case 10:
            if (Day>=1 && Day<=31)
               cout << "October" << Day << "th," << Year << "," << endl;
            break;
       case 11:
            if (Day>=1 && Day<=30)
               cout << "November" << Day << "th," << Year << "," << endl;
            break;
       case 12:
            if (Day>=1 && Day<=31)
               cout << "December" << Day << "th," << Year << "," << endl;
            break;
       default:
               cout << "Invalid date." << endl;
               break;
}

    
    
    system("PAUSE");
    return EXIT_SUCCESS;
}



// leap year bool
bool leapYear (int)
{
    if ((( Year % 4 == 0) && (! ( Year % 100 == 0))) || (( Year % 4 == 0) && (! ( Year % 100 == 0))&&( Year % 400 == 0))) 
     return true;
      
    else
        return false;
        }


65 expected `;' before "cout"
Last edited on
sohguanh (1236)
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            else if (Day == 29) { // put this curly brace
               leapYear(Year)  
               cout << "February" << Day << "th," << Year << "," << "Is also a leap year!" << endl;//add one more <<

            } //put this curly brace

               else
               cout << "Invalid date." << endl;
            break;
richardforc (42)
along with sohguanh suggestion put ; on line 64 
 
 
leapYear(Year);
squik (11)
now im getting
66 expected primary-expression before "else"
bluecoder (763)
With Some modification : 

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#include <cstdlib>
#include <iostream>
#include <cmath>

	#define stringify(mymonths ) # mymonths

using namespace std;

// declaring
int Day = 0;
int Month = 0;
int Year = 0;
bool leapYear (int);

enum month { January = 1 , Feb  ,March , Aprial , May , June , July , Agust , Sept , Oct , Nov , Dec } ;
const char* m_month[] = 
{
	stringify(January),
	stringify(Feb),
	stringify(March),
	stringify(Aprial)

	stringify(May),
	stringify(June),
	stringify(July),
	stringify(Agust)
			stringify(Sept),
	stringify(Oct),
	stringify(Nov),
	stringify(Dec)


};

int main(int argc, char *argv[])
{
	// outputting messages to the user
	cout << "Lets check your dates shall we?" << endl;
	cout << "Please enter in a two(2) digit number for the month." << endl;
	cin >> Month;
	cout << "Please enter in a two(2) digit number for the day." << endl;
	cin >> Day;
	cout << "Please enter in a four(4) digit number for the year." << endl;
	cin >> Year;

    
    
    
    
	system("PAUSE");
	return EXIT_SUCCESS;
}

switch( Month )
{
       case 01:
		   case  03 : 
		   case 05:
		   case  07 : 
		   case 08:
		   case  10 : 
		   case  12 : 
                 cout <<m_month[Month] << Day << "th," << Year << "," << endl;
            break;
       case 02:
       case 04:
       case 06:
       case 09:
       case 11:
               cout <<<m_month[Month] << Day << "th," << Year << "," << endl;
            break;
}


// leap year bool
bool leapYear (int)
{
    if ((( Year % 4 == 0) && (! ( Year % 100 == 0))) || (( Year % 4 == 0) && (! ( Year % 100 == 0))&&( Year % 400 == 0))) 
     return true;
      
    else
        return false;
        }

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