HELP PLEASE

[mrc0121]

Using selection criteria method, construct a program to output the following total cost in each case.
i. If vitamins sold <=20 and cost is 0.05 pence per vitamin.
ii. If vitamins sold between 21 and 49 inclusive then cost is 0.04 pence per vitamin.
iii. If vitamins sold >49 then cost is 0.03 pence per vitamin

  // Filename: PROJECT7. CPP
// Uses a switch statement to control a user's selection. 

#include "stdafx.h"
#include <iostream>
#include<iomanip>
#include <stdio.h>

using namespace std;

void main()
{
int menu;
float charge = 0.00;	 // Holds total charge

cout << "** Computer Repair Center **\n\n";
cout << "What work was performed? Here are the choices: \n\n";
cout <<"\t1. Replaced the CPU and RAM\n";
cout <<"\t2. Replaced the RAM only\n";
cout <<"\t3. Repaired the monitor\n";
cout <<"\t4. Fixed stuck keys\n";

do
{
cout << "\nwhat work was performed?";
cin >> menu;
}while ((menu < 1) || (menu > 4));

// Store charge based on the repair person's input 
switch (menu)
{
case (1): {charge =  200.00; }   // Notice no break here 
case (2): {charge += 150.00; break;}
case (3): {charge =  75.00;  break;}
case (4): {charge =  12.00;  break;}
}

// Print.the results
cout << setprecision(2);
cout.setf(ios::showpoint);
cout.setf(ios::fixed);
cout << "\nthe total charge is $" << charge << "\n\n"; 
system("pause");
return;
}

I have no idea where to input the numbers given on the question and how to multiply them so if anyone kind enough to help me please would really helpful

[iAk3T05o]

Remove the first #include (select empty project in the setup)
void main()?
What's the parentheses in the switch cases for, case (1) etc. And why do you end the break statements with '}'

[mrc0121]

thanks for you reply Nathan if you look the code below im trying to work out case are questions to buyers if say if someone buys vitamins 1-29 price will be 0.05
if 21 to 49 price will be 0.004
and 49 or more 0.03
if it make any sense :(

If vitamins sold <=20 and cost is 0.05 pence per vitamin.
If vitamins sold between 21 and 49 inclusive then cost is 0.04 pence per vitamin.
If vitamins sold >49 then cost is 0.03 pence per vitamin

// Filename: PROJECT7. CPP
// Uses a switch statement to control a user's selection.

#include "stdafx.h"
#include <iostream>
#include<iomanip>
#include <stdio.h>

using namespace std;

void main()
{
int menu;
float charge = 0.00; // Holds total charge

cout << "** vitamin shop **\n\n";
cout << "What work was performed? Here are the choices: \n\n";
cout <<"\t1. If vitamins sold <=20 and cost is 0.05 pence per vitamin\n";
cout <<"\t2. If vitamins sold between 21 and 49 inclusive then cost is 0.04 pence per vitamin\n";
cout <<"\t3. If vitamins sold >49 then cost is 0.03 pence per vitamin\n";

do
{
cout << "\nwhat work was performed?";
cin >> menu;
}while ((menu < 1) || (menu > 3));

// Store charge based on the repair person's input
switch (menu)
{
case (1): {charge *= 0.05; } // Notice no break here
case (2): {charge *= 0.04; break;}
case (3): {charge *= 0.03; break;}
}

// Print.the results
cout << setprecision(2);
cout.setf(ios::showpoint);
cout.setf(ios::fixed);
cout << "\nthe total charge is $" << charge << "\n\n";
system("pause");
return;
}

[mrc0121]

I have no idea why my tutor used break I just changed the word and numbers.
say if i want to buy 20 vitamins i want the 20 to * with 0.05 and get me the result's if you know what im trying to say

[dg281]

You are going to want to use if/else statements here instead of a switch. You can look here for more info on both statements if you are confused: http://www.cplusplus.com/doc/tutorial/control/

I would start the program off by asking the user how many vitamins they would like to buy. Then you can use if/else to find out which price they get (i.e

if(number < 21)
//Code for price 1
else if(number <50)
//Next statement 
//etc. 

Also use int main() instead of void main() http://www.cplusplus.com/forum/beginner/19979/

[mrc0121]

thanks a lot mate :)

[alizacarvor]

Yes solution is helpful for me also. but i stuck in .net i used else if condition resolve the problem.
Thank You
Fix My Computer Dude