Display

[bnd98]

In the following code, at the end, I would like to have "Total Weekly Calories: " displayed along with the total amount.

However I have "Total Weekly Calories:" display seven times and the correct total is in the seventh spot. How can I get "Total...to show only once and the correct amount to display? I have tried everything that I can think of and still can not come up with anything. I can get the "Total Weekly Calories" to display once but then the amount of calories is incorrect. Please see if you can see my errors?

#include<iostream.h>
#include<conio.h>
#include<string.h>

class Meal
{
    friend ostream& operator<<(ostream &out, const Meal &aMeal);
    friend istream& operator>>(istream &in, Meal &aMeal);
private:
    char entree[20];
    int calorie;
public:
    Meal(char ent[] = "Pizza", int cal = 0);
    Meal operator+(Meal &aMeal);
     Meal( const Meal& toCopy)
	 {
         copy(toCopy);
     }
     const Meal& operator=(const Meal& rhs){
         copy(rhs);
         return *this;
     }
    void displayMeal();

protected:
    void copy( const Meal& rhs){
        // do not copy entree
        calorie = rhs.calorie;
    }
};


Meal::Meal(char ent[], int cal )
{
	strcpy(entree,ent);
	calorie = cal;
};


Meal Meal::operator+(Meal &aMeal)
{
	Meal exam;
	exam.calorie = calorie + aMeal.calorie;
	return(exam);
};

void Meal::displayMeal()
{
	cout<<"Total weekly calories: "<<calorie<<endl;
};

ostream& operator<<(ostream &out, const Meal &aMeal)
{
	out<<"Total weekly calories: "<<aMeal.calorie<<endl;
	return(out);
};

istream& operator>>(istream &in, Meal &aMeal)
{
	cout<<endl; //clears
	cout<<"Enter the entree name: ";
	in>>aMeal.entree;
	cout<<"Enter the amount of calories: ";
	in>>aMeal.calorie;	
	return(in);
};

void main()
{
	Meal meals[7];


	Meal temp;

	for (int i = 0; i < 7; i++)
		cin>>meals[i];
		
	for (i = 0; i < 7; ++i)
	{
		temp = temp + meals[i];
		temp.displayMeal();
	}
	
		getch();
};

[7stud]

for (i = 0; i < 7; ++i)
{
temp = temp + meals[i];
temp.displayMeal();
}


First change the for loop condition to:

for(i=0; i<7; i++)

then move the line:

temp.displayMeal();

out of the loop and place that as the next line after the loop.

[alpha]

Originally posted by 7stud
for (i = 0; i < 7; ++i)
{
temp = temp + meals[i];
temp.displayMeal();
}


First change the for loop condition to:

for(i=0; i<7; i++)

then move the line:

temp.displayMeal();

out of the loop and place that as the next line after the loop.

I fail to see a difference in the for loop update. ++i and i++ in this case doesn't make a difference except to increment the counter i.

now in a case such as this:

while(array[j++])

would be different from

while(array[++j])

edit:

in your for loops, i is only within scope of the first one, since they are not nested. so either declare i above where you declared meals[7], or do something like this:

for(int i = 0; i < 7; i++) for your second for loop.

and do what 7stud said as far as taking out temp.displayMeal() from the for loop.

[7stud]

alpha,

Thanks, I didn't realize that.

[bnd98]

Thank you both very much. I spent a lot of time on that one area and I do not know how I did not catch that error. You have both been very helpful.