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[Cbeginner2k2]

Can anyone fix the errors for me, I should write the code in C program, but instead I wrote it in C++, it works fine in C++, but many on C when I compile with the C compiler. Please fix the errors for me in C program, thanks!

This is the C program instruction, that I need to do:

Students are asked to write code to compute and
display a customer's
bill for a takeout fast-food restaurant,

(1) There are several menu items and their names and
costs are as followed:

Crab Cakes $3.75 Bruschetta $4.55
Chicken $6.25 Fried Calamari $5.95

(2) The price is reduced based on (a) the amount of
items ordered
and (b) the age groups (children, adults, or senior
citizens) and
note that state tax is also applied to the total price
and it is
the same for all age groups. The state tax, age and
quantity discounts are as followed:

Quantity discount for each item: 10% >=20 Orders
7% >=10 Orders
5% >=5 Orders
Children Discount: 10%
Senior Citizen Discount: 20%
State Tax Percent: 4.5%

(3) The program should (a) request the quantity of
each item ordered,
(b) request the input value from the Age Group as
children [C],
senior citizen [S], or adult [A], (c) calculate the
subtotal, subtotal
with discount, state tax, and the final total cost,
and (d) display an itemized bill.

(4) Run and enter the requested information.

The example of a screen input/output is as followed:

TAKE ORDER
How many "Crab Cakes" ($3.75)? :20
How many "Bruschetta" ($4.55)? :10
How many "Chicken" ($6.25) :0
How many "Fried Calamari" ($5.95)? :4

Age group (S, C, A)? :S

THE CUSTOMER ITEMIZED BILL
Item Names Quantity Prices Quantity Discount

Crab Cakes ($3.75) 20 $75.00 $67.50
Bruschetta ($4.55) 10 $45.50 $42.32
Fried Calamari ($5.95) 4 $23.80 $23.80

SubTotal $144.30 $133.62
Age Group Senior Citizen

SubTotal (Age Group Discount) $106.89
State Tax (%4.5) $4.81

TOTAL $111.70


And here is my C++ program, I should write it in C,
too many errors when using C compiler, please fix it for me in C program, thanks!

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

double calculateDiscount(double &, double);

int main()
{
	double cake=0.0, brus=0.0, chic=0.0, cala=0.0,
stotal=0.0,agedis=1.0;
	char age=' ';
	const double tax = .045;	

	cout << "TAKE ORDER" <<endl;
	cout << "How many Crab Cakes ($3.75)? ";
	cin  >> cake;	
	cout << "How many Bruschetta ($4.55)? ";
	cin  >> brus;
	cout << "How many Chicken ($6.25)? ";
	cin  >> chic;
	cout << "How many Fried Calamari ($5.95)? ";
	cin  >> cala; 
	cout << "\n\nAge group (S,C,A)? ";
	cin  >> age;

	cout.setf(ios::fixed);
	cout.setf(ios::showpoint);
	cout.precision(2);

	cout << "\n\nTHE CUSTOMER ITEMIZED BILL"<<endl;
	cout << "Item Names Quantity Prices Quantity
Discount\n\n";
	if (cake !=0){
		cout << "Crab Cakes ";
		stotal +=calculateDiscount(cake,3.75);
	}
	if (brus !=0){
		cout <<"Bruschetta ";
		stotal +=calculateDiscount(brus,4.55);
	}
	if (chic !=0){
		cout <<"Chicken ";
		stotal +=calculateDiscount(chic,6.25);	
	}
	if (cala !=0){
		cout <<"Fried Calamari ";
		stotal +=calculateDiscount(cala,5.95);
	}
	cout << "\nSubTotal $"<<(cake + brus + chic + cala)<<
" $"<< stotal<<endl;
	cout << "Age Group ";

	switch (age){
		case 'S' : cout << "Senior Citizen"<<endl; agedis =
.20; break;			
		case 'C' : cout << "Children"<<endl; agedis = .10;
break;
		case 'A' : cout << "Adults"<<endl;break;
	}
	cout << "\nSubTotal (Age Group Discount)$"<<stotal
-stotal*agedis<<endl;
	cout << "State Tax (%4.5)
$"<<((stotal-(stotal*agedis))*tax)<<endl;

return 0;
}

double calculateDiscount(double &order, double price){
	double total=0.0;
	total = order*price;
	if(order >= 20)
		total = total - (total * .10);
	else if(order >=10)
		total = total - (total* .07);
	else if(order >=5)
		total = total - (total * .05);
	if (total != 0)
		cout << "($"<<price<<") "<< order <<"
$"<<order*price<<" $"<<total<<endl;
	order = order*price;
	return total;
}

[code][/code]tagged by Salem

[Azuth]

Umm, how about you have a go at fixing the errors yourself.
Here's some code to get you started

(cin && cout) != C;
(cin && cout) == C++;

[Agnesa]

Hm it's kind of hard to read your code but if

you are a C begginer the first think you should know is what

exacly you need first. You said that in C++ it works all you need

to change in here if you are begginer just the cin>> is almost the

same as "scanf" if you know what it does and also if you wont to

use printf instead of cout ok i hope it helps