I am receiving a run time error

[tangren17]

I am working on a homework problem and I am receiving a runtime check failure #3: the variable selection is being used with out being initiated.

I am trying to fix it but don't know where to start.
This is one file of the three made to this problem.

Date file: date.cpp
#include "Astrology.cpp"
#include <iostream>
using namespace std;

Date::Date()
{

}

Date::Date(int m, int d, int y)
{
set (m,d,y);
}

void Date::input()
// preconditions: date is entered in mm/dd/yyyy format
// postconditions: values for current object are changed to input values
{
char char1;
cout << "Enter the date in the following format mm/dd/yyyy >";
cin >> month >> char1 >> day >> char1 >> year;
}

void Date::output()
// preconditions: none
// postconditions: date is displayed in mm/dd/yyyy format
{
cout << month << "/" << day << '/' << year << endl;
}

void Date::set(int new_month, int new_day, int new_year)
//Precondition: new_month and new_day form a possible date.
//Postcondition: The date is reset according to the arguments.
{
month = new_month;
day = new_day;
year = new_year;
}

bool Date::operator ==(Date rightSide)
// preconditions: none
// postconditions: return true when rightSide.day and rightSide.month are the same
// as day and month
// otherwise returns false
{
bool same = false;
if ( day == rightSide.day && month == rightSide.month )
same = true;

return same;
}

void Date::SetSign()
{
int zodiac=0;


enum Zodiac {aries, taurus, gemini, cancer, leo, virgo, libra, scorpio, sagittarius, capricorn, aquarius, pisces};
Zodiac selection;

if (month==3&&day>=21 || month==4&&day<20)
zodiac = 0;
else if(month==4&&day>=21 || month==5&&day<=21)
zodiac = 1;
else if(month==5&&day>=22 || month==6&&day<=21)
zodiac = 2;
else if(month==6&&day>=22 || month==7&&day<=22)
zodiac = 3;
else if(month==7&&day>=23 || month==8&&day<=21)
zodiac = 4;
else if(month==8&&day>=22 || month==9&&day<=23)
zodiac = 5;
else if(month==9&&day>=24 || month==10&&day<=23)
zodiac = 6;
else if(month==10&&day>=24 || month==11&&day<=22)
zodiac = 7;
else if(month==11&&day>=23 || month==12&&day<=22)
zodiac = 8;
else if(month==12&&day>=23 || month==1&&day<=20)
zodiac = 9;
else if(month==1&&day>=21 || month==2&&day<=19)
zodiac = 10;
else if(month==2&&day>=20 || month==2&&day<=20)
zodiac = 11;

switch(zodiac)
{
case 0: Sign = aries; break;
case 1: Sign = taurus; break;
case 2: Sign = gemini; break;
case 3: Sign = cancer; break;
case 4: Sign = leo; break;
case 5: Sign = virgo; break;
case 6: Sign = libra; break;
case 7: Sign = scorpio; break;
case 8: Sign = sagittarius; break;
case 9: Sign = capricorn; break;
case 10: Sign = aquarius; break;
case 11: Sign = pisces; break;
}

selection == Sign;

switch(selection)
{
case aries: cout << " Aries\n"; break;
case taurus: cout << " Taurus\n";break;
case gemini: cout << " Gemini\n"; break;
case cancer: cout << " Cancer\n"; break;
case leo: cout << " Leo\n";break;
case virgo: cout << " Virgo\n"; break;
case libra: cout << " Libra\n"; break;
case scorpio: cout << " Scorpio\n";break;
case sagittarius: cout << " Sagittarius\n"; break;
case capricorn: cout << " Capricorn\n"; break;
case aquarius: cout << " Aquarius\n";break;
case pisces: cout << " Pisces\n"; break;
}
}
----------------------------------------------------------------
The test file

#include "Astrology.cpp"
#include <iostream>

using namespace std;


int main()
{

Date today;

today.input();

cout << "\n Today is: ";
today.output();

Date birthday;

cout << " When is your birthday? ";
birthday.input();

cout << " Your birthday is ";
birthday.output();


Date ShowZodiac;

cout << "\nYour zodiac sign is ";
ShowZodiac.SetSign();

if (today == birthday)
cout << "\n\nHappy Birthday!\n\n";
return 0;
}
------------------------------------------------------------------------
Astrology file


#include <iostream>
#include <cstdlib>
#include <ctime>
#include <cctype>
#include <string>

enum Zodiac {aries, taurus, gemini, cancer, leo, virgo, libra, scorpio, sagittarius, capricorn, aquarius, pisces};
enum Element {fire, water, air, earth};

class Date
{
public:
Date(int month, int day, int year);
Date();

void input(); // Get Player's choice
void output();
void set(int new_month, int new_day, int new_year);
void SetSign();
void ShowSign(enum Zodiac);

bool Date::operator ==(Date rightSide);

private:

Zodiac selection;
int Zodiac, Sign;
int month, day, year;
};

when I enter the date and birth day the sign does not pop up, just the runtime failure.

Please help

[simptri69]

if you're creating multifile app then you should use header files.ie.

#include "header.h"     // not #include "header.cpp" 

header.h will have all the declarations and header.cpp will have the definitions.

[mutexe]

Do you have call stack when it breaks? Can you trace it to the offending line in your code?

nevermind. think i've spotted it:
selection == Sign;

looks dodgy. You want to do some kind of assignment maybe?

(although even then you are trying to assign a Zodiac enum to an int..)

edit: wait a minute.. why can't you print out your starsigns in the first switch statement. why effectively try and do the same thing twice?

[tangren17]

simptri69

do I need to create a new item then and erase the old files with .cpp?

[mutexe]

No. it has nothing to do with that.
Read my post.

[tangren17]

mutexe,

how would I print out the star signs in the first statement?

[hackmattr]

you can use one switch statement by doing this instead.
case 0: Sign = aries; cout <<"Aries\n"; break;

I haven't looked for your original problem, but that is how you print out the star signs in one switch statement.

[tangren17]

hackmattr,

would I just put
case 0: Sign = aries; cout <<"Aries\n"; break;

and then do it for each one changing the case number to increase for each one?