problem with classes

[kz07]

im having some errors with my code. can someone help me fix it? =(

this is my header file:

#include <iostream>
#include <string>

using namespace std;

class dayType{

public:
        dayType(string);
        void setDay(string);
        string printDay();
        string prevDay();
        void nextDay();
        string returnDay();

private:
        string weekDay[7];
        int currentDay;
        string inputDay;
};

dayType::dayType(string){
    currentDay = 0;
    inputDay = "";
    weekDay[7] = {" "};
}

void dayType::setDay(string day){

    if(day=="Monday" || day=="MON"){
        currentDay = 1;
        weekDay[currentDay - 1] = "Monday";
        inputDay = day;
    }

    else if(day=="Tuesday" || day=="TUE"){
        currentDay = 2;
        weekDay[currentDay - 1] = "Tuesday";
        inputDay = day;
    }

    else if(day=="Wednesday" || day=="WED"){
         currentDay = 3;
         weekDay[currentDay - 1] = "Wednesday";
         inputDay = day;
    }

    else if(day=="Thursday" || day=="THUR"){
        currentDay = 4;
        weekDay[currentDay - 1] = "Thursday";
        inputDay = day;
    }

    else if(day=="Friday" || day=="FRI"){
        currentDay = 5;
        weekDay[currentDay - 1] = "Friday";
        inputDay = day;
    }

    else if(day=="Saturday" || day=="SAT"){
        currentDay = 6;
        weekDay[currentDay - 1] = "Saturday";
        inputDay = day;
    }

    else if(day=="Sunday" || day=="SUN"){
        currentDay = 7;
        weekDay[currentDay - 1] = "Sunday";
        inputDay = day;
    }

    else{
        cout << "" << endl;
    }


}
string dayType::printDay(){
        cout << (weekDay + (currentDay-1));
}

string dayType::prevDay(){
  cout <<  (weekDay + (currentDay - 1));
}

void dayType::nextDay(){
    switch(currentDay){
                case 1:{
            currentDay++;
            setDay("Tuesday");
            break;
            }

                case 2:{
            currentDay++;
            setDay("Wednesday");
            break;
            }

                case 3:{
            currentDay++;
            setDay("Thursday");
            break;
            }

                case 4:{
            currentDay++;
            setDay("Friday");
            break;
            }

                case 5:{
            currentDay++;
            setDay("Saturday");
            break;
            }

                case 6:{
            currentDay++;
            setDay("Sunday");
            break;
            }
                case 7:{
            currentDay = 1;
            setDay("Monday");
            break;
            }

    }
}

this is my main.

#include <iostream>
#include <string>
#include "dayType.h"

using namespace std;

int main(){

	dayType myDay("Monday");
	dayType temp("Sunday");
	
        myDay.printDay();
	cout << endl;
        cout << myDay.prevDay() << endl;
	cout << myDay.nextDay() << endl;
        temp.printDay();
	cout << endl;
        cout << temp.prevDay() << endl;
	cout << temp.nextDay() << endl;
	
return 0;

}

i'm pretty lost. =( i know there are lots of errors.

[jonsca]

The first problem is with your constructor, you have it as taking in a string but in the constructor definition you don't give the string a name nor assign it to anything within that constructor.
Also,

string dayType::printDay(){
        cout << (weekDay + (currentDay-1));
}

string dayType::prevDay(){
  cout <<  (weekDay + (currentDay - 1));
}

Neither of these return strings, nor can you just use << operator on an object without that object having overridden operator <<.
(see http://pages.cs.wisc.edu/~hasti/cs368/CppTutorial/NOTES/OVERLOAD.html or there's many more pages out there)

There may be other issues but those are the big ones holding you up right now.