Having problem finding the sum of array

After a grueling of 3 hours of brain raking well i give up, clearly I'm still stuck on how can i sum everything that was input in the array bill.

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#include <iostream>
#include <string>
#include <stdio.h>
#include <stdlib.h>


using namespace std;

int main()
{
    system ("COLOR F1");


    string userName,userPass;
    int i,orders,qnty,loginAttempt=0;
    double num1=82.45,num2=88.20,num3=86.00,num4=72.50,num5=59.99,num6=58.50;
    double bill[6]={0,0,0,0,0,0};
    double totalBill=0;
    char repeat='y';


while(loginAttempt<3)
    {
        cout<<"Enter your Username: ";
        cin>>userName;
        cout<<"Password: ";
        cin>>userPass;

        if(userName=="john"&&userPass=="smith")
        {
            cout<<"\nWelcome John!\n";
            break;
        }

        else if(userName=="admin"&&userPass=="admin")
        {
            cout<<"\nWelcome admin\n";
            break;
        }
        else
        {
            cout<<"Invalid login attempt. Please try again.\n"<<'\n';
            loginAttempt++;
        }
    }
    if(loginAttempt==3
       )
    {
            cout<<"Too many login attempts! The program will now be locked.";
            return 0;
}

cout<<"\nWELCOME TO GNS DINER!\n\n";

cout<<"Menu;\n";
cout<<"1.Sweet Maple BBQ Chicken Kabobs\t\t\t(P82.45)\n";
cout<<"2.Grilled Spicy Lime Chicken with Creamy Avocado Sauce\t(P88.20)\n";
cout<<"3.Grilled Triple Citrus Salmon\t\t\t\t(P86.00)\n";
cout<<"4.Grilled Cheeseburger Pizza\t\t\t\t(P72.50)\n";
cout<<"5.Western Bacon Burgers\t\t\t\t\t(P59.99)\n";
cout<<"6.Monterey Chicken Sandwiches\t\t\t\t(P58.50)\n\n";

while(repeat=='y')
{
    {
    cout<<"\nTake your time, what's your order?\n";
    cin>>orders;
    cout<<"How many?\n";
    cin>>qnty;

    cout<<"Anything else?(y/n): ";
    cin>>repeat;
    }

        switch(orders)
    {
        case 1:
        {
        cout<<"You've order "<<qnty<<" Sweet Maple BBQ Chicken Kabobs.\n";
        bill[0]+=num1*qnty;
        break;
        }

        case 2:
        {
        cout<<"You've order "<<qnty<<" Grilled Spicy Lime Chicken with Creamy Avocado Sauce.\n";
        bill[1]+=num2*qnty;
        break;
        }

        case 3:
        {
        cout<<"You've order "<<qnty<<" Grilled Triple Citrus Salmon.\n";
        bill[2]+=num3*qnty;
        break;
        }

        case 4:
        {
        cout<<"You've order "<<qnty<<" Grilled Cheeseburger Pizza.\n";
        bill[3]+=num4*qnty;
        break;
        }

        case 5:
        {
        cout<<"You've order "<<qnty<<" Western Bacon Burgers.\n";
        bill[4]+=num5*qnty;
        break;
        }

        case 6:
        {
        cout<<"You've order "<<qnty<<" Monterey Chicken Sandwiches.\n";
        bill[5]+=num6*qnty;
        break;
        }
    }
}

for(i=0;i<6;i++)
{
    totalBill=totalBill+bill[i];
}
    cout<<totalBill<<endl;
}
Last edited on
You need to initialise all your bill[i] to zero before you start doing any += operations on them.

double bill[6]={0,0,0,0,0,0};

so i update the array bill the only problem left is how can i get all the elements inside the array to sum? while i'm researching the net i stumble upon this for loop, but the problem is how can is use this?

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#include <iostream>

using namespace std;

int main()
{
	int a, sum = 0 ;

       /* or use this
            int a,sum;
            sum = 0;
        */

 
	int arrayname[] = {1, 2, 3, 4, 5};

	for (a=0; a<5; a++)
	{
		

		sum+=arrayname[a];
	}

	cout << sum << endl;

	return 0;
}

ok i updated the code and now it works! thx for helping salem c
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