``````guys sorry about my post earlier . this is what i did with my program but i dont think my equation is correct because whenever i want to get
the total amount due it always give the wrong amount . i dont thinks this equation is correct "amount=amount+price*quant;"
guys i need your help. Thank you!

#include<iostream>
#include <windows.h>

using namespace std;

void gotoxy(long x, long y)
{
COORD pos = {x, y};
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
}

main()
{
char name ;
int order;
int quant=0;
int amount=0;
double cash;
double change;
char again;
char another;
int a, x;
int cq=0;

do
{
gotoxy(1,2);
for(x=1; x<=6; x++)
{
cout<<"\n"<<x<<".";
cout<<"\n";
}
gotoxy(3,3);
cout<<"Tapsilog=P80.00" <<"\t\t\t" <<"7. Beef Mami=P50.00";
gotoxy(0,4);
for(a=0; a<=70; a++)
{
cout<<"-";
}
gotoxy(3,5);
cout<<"Tosilog=P80.00" <<"\t\t\t" <<"8. Bottled Softdrinks=P25.00";
gotoxy(0,6);
for(a=0; a<=70; a++)
{
cout<<"-";
}
gotoxy(3,7);
cout<<"Longsilog=P95.00" <<"\t\t\t" <<"9. Canned Softdrink=P25.00";
gotoxy(0,8);
for(a=0; a<=70; a++)
{
cout<<"-";
}
gotoxy(3,9);
cout<<"Bulalo=P225.00"<<"\t\t\t" <<"10. Minute Maid=P30.00";
gotoxy(0,10);
for(a=0; a<=70; a++)
{
cout<<"-";
}
gotoxy(3,11);
cout<<"Sisig with Egg=P140.00"<<"\t\t"<<"11. Nestea=P20.00";
gotoxy(0,12);
for(a=0; a<=70; a++)
{
cout<<"-";
}
gotoxy(3,13);
cout<<"Goto=P40.00"<<"\t\t\t\t"<<"12. Bottled watter=P15.00";
gotoxy(0,15);

cout<<"\nCustomer name: ";
gets(name);

do
{
cout<<"\nHello there "<<name<<", welcome to Tapsi Ni Vivian! What is your order? ";
cin>>order;

cout<<"How many orders will that be?: ";
cin>>quant;

if (order==1)
{
amount=amount+80*quant;
}

else if (order==2)
{
amount=amount+80*quant;
}

else if (order==3)
{
amount=amount+95*quant;
}

else if (order==4)
{
amount=amount+225*quant;
}

else if (order==5)
{
amount=amount+140*quant;
}

else if (order==6)
{
amount=amount+40*quant;
}

else if (order==7)
{
amount=amount+50*quant;
cq=quant;
}

else if (order==8)
{
amount=amount+25*quant;
cq=quant;
}

else if (order==9)
{
amount=amount+25*quant;
cq=quant;
}

else if (order==10)
{
amount=amount+30*quant;
cq=quant;
}

else if (order==11)
{
amount=amount+20*quant;
cq=quant;
}

else if (order==12)
{
amount=amount+15*quant;
cq=quant;
}

else;

cout<<"Want to add an another order? (Y or N): ";
cin>>again;
cout<<"\n";

}while (again=='y'||again=='Y');

cout<<"Customer name: "<<name;

cout<<"\nTotal cash: P";
cin>>cash;

change=cash-amount;

cout<<"\n\nThank you for ordering "<<name<<", please come again soon! :)";

cout<<"\n\nAre there any more customers? (Y or N): ";
cin>>another;
cout<<"\n\n";

if (another=='y'||another=='Y')
system("cls");
else
cout<<"***end of program***";

cin.ignore();

}while(another=='y'||another=='Y');

cout<<"\n\n";
system ("pause");
return 0;
}
``````

Using several functions ... a function for each task ...

and help elucidate the logic flow.

``````// restaurant.cpp //

#include <iostream>
#include <string>

// to keep code portable ... best not to use this //
#include <windows.h>

using namespace std;

struct Item
{
string name;
double price;
} ;

// putting data here, in an array of struct ...
// makes your program more generic
// i.e. easier to revise ...
{
{ "Tapsilog", 80.00 }, { "Longsilog", 95.00 },
{ "Bulalo", 225.00 }, { "Sisig with Egg", 140.00 },
{ "Beef Mami", 50.00 }, { "Bottled Softdrinks", 25.00 },
{ "Canned Softdrink", 25.00 }, { "Minute Maid", 30.00 },
{ "Nestea", 20.00 }, { "Bottled watter", 15.00 }
} ;

// to keep code portable ... best not to use this //
void gotoxy(short x, short y)
{
COORD pos = {x, y};
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);
}

void printMsgAt( const Item& itm, short x, short y )
{
gotoxy( x, y );
cout << itm.name << " P" << itm.price;
}

double getOrder( string& name )
{
string msg, line( 65, '-' ); // construct string 65 '-'

double amount = 0;
for( ; ; ) // loop forvever until ... break or return ...
{

short i;
for( i = 0; i < NUM_CHOICES; i += 2 )
{
gotoxy(0, 3+i );
cout << i+1 << '.';
gotoxy(40, 3+i );
cout << i+2 << '.';
gotoxy( 0, 4+i );
cout << line;
}

gotoxy(0,i+3 );
cout<<"\nCustomer name: ";
getline( cin, name );

cout <<"\nHello there "<<name
<<", welcome to Tapsi Ni Vivian! \n";

int quant = 0, orderNum = 0;

for( ; ; )
{
gotoxy(0,i+8 );
cout << "Enter # 1.." << NUM_CHOICES <<": ";

if( cin>>orderNum && cin.get() == '\n' &&
orderNum > 0 && orderNum <= NUM_CHOICES )
{
cout<<"Enter number of #" << orderNum << " desired: ";
if( cin>>quant && cin.get() == '\n' )
{
// accept ...
}
}
else
{
cin.clear();
cin.sync();
cout << "\nInvalid entry ... try again.\n";
cout << "\nPress 'Enter' to continue ... ";

gotoxy( 0, i+8 );
cout << string( 479, ' ' );
continue;
}

cout<<"Add to order (Y or N): ";
cin.ignore();

cout<<"\n";
{
}
else cout << "Not added ... \n";

cout << "More (Y or N): ";
cin.ignore();

return amount;

gotoxy( 0, i+8 );
cout << string( 479, ' ' );
}
}
return amount;
}

int main()
{
// your code goes here ...
}
``````