Question

Modify the code, so that it will check the various user inputs for validity (e.g., months being between 1 - 12),

- if invalid value was entered, ask user to enter a new (& correct) value,

- check to see if new value is valid

- if valid allow the user to continue.

- if still not valid repeat this process, until valid value is entered

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QUESTION:

Desc: This program creates a painting order receipt.
Ask for the following information:
Customer name.
Month to schedule painting, numbers between (1 - 12) for month number are valid
Customer credit card number (the card number can be either 15 or 16 digits).
the number of interior and exterior square feet needed to paint.
Calculate the following:
Total number of gallons needed (int/ext/all)
Total paint cost (int/ext/all).
Cost for a gallon of paint is $600 (interior) and $1200 (exterior),
Each gallon of paint can paint 400 SQFT
  
Create a receipt that looks like the sample below and display it to the user.
  
Date: 10/08/2019
Name:   
Card Number: ******3456
Month Scheduled: 11-NOV

Month Int(Gal) Int($) Ext(Gal) Ext($) Total(Gal) Total($)
------- --------- ----------- --------- ----------- ----------- ------------
11-Nov 5 $3,000.00 4 $4,800.00 9 $7,800.00
  
  

Line 1: [tab]Date: Today's Date
Line 2: [tab]Name: Customer Name
Line 3: [tab]Card Number: cardnumber*
Line 4: [tab]Month Scheduled: Month**
   <------------ 35 chars ----------->
   * Only 10 digits of the card number is displayed,
from those 10 digits, the first 6 are [*] followed by the last 4 digits of the card.
Example: Cardnumber 1234567890123456, will be displayed as: ******3456
   ** Month is the combination of Month Number entered, a "-", followed by the 3-letter month name
Example: Month entered: 11, Month will be displayed as: 11-NOV

ANSWER(which needs to be modified with loops):

using System;
using static System.Console;

namespace Mid1
{
enum Months {JAN=1, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC };

class Program

static void Main(string[] args)
{
const double COST_PAINT_INT = 600;
const double COST_PAINT_EXT = 1200;
const int SQFT_PER_GALLON = 400;

int monthScheduled;

int monthSqftInt = 0;
int monthSqftExt = 0;
int gallonsInt = 0;
int gallonsExt = 0;
int gallonsPartialInt = 0;
int gallonsPartialExt = 0;
int gallonsTotal = 0;

double costMonthInt = 0;
double costMonthExt = 0;
double costTotalInt = 0;
double costTotalExt = 0;
double costTotal = 0;

string dateOrdered = DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss");
string name;
string cardNumber, cardNumberProtect;
string monthDisplayed;
string receipt;

// Ask user for their name and card number

Write("\nPlease enter your name: ");
name = ReadLine();

// Ask the user for the month scheduled to paint
Write("\nPlease enter the number for the month you want your painting scheduled (1-12): ");
monthScheduled = Convert.ToInt32(ReadLine());
  

// Ask the user for the SQFT needed to paint (interior/exterior)
Write("\nPlease enter the square feet of interior walls you want painted: ");
monthSqftInt = Convert.ToInt32(ReadLine());
Write("\nPlease enter the square feet of exterior walls you want painted: ");
monthSqftExt = Convert.ToInt32(ReadLine());

// Ask the user for their 15/16 digit credit card number
Write("\nPlease enter your card number (AMEX, VISA, & MC cards accepted): ");
cardNumber = ReadLine();

// Calculations

// Calculate the gallons needed for painting
gallonsInt = monthSqftInt / SQFT_PER_GALLON;
gallonsExt = monthSqftExt / SQFT_PER_GALLON;

gallonsPartialInt = monthSqftInt % SQFT_PER_GALLON;
gallonsPartialExt = monthSqftExt % SQFT_PER_GALLON;

gallonsInt += gallonsPartialInt.CompareTo(0);
gallonsExt += gallonsPartialExt.CompareTo(0);

gallonsTotal = gallonsInt + gallonsExt;

// Calculate the cost
costMonthInt = gallonsInt * COST_PAINT_INT;
costMonthExt = gallonsExt * COST_PAINT_EXT;
costTotal = costMonthInt + costMonthExt;

// Create month displayed
monthDisplayed = monthScheduled + "-" + (Months)monthScheduled;

// Create protected card number
cardNumberProtect = "******" + cardNumber.Substring(cardNumber.Length - 4, 4);

// Display Receipt

receipt = String.Format("\n\t{0, -18}{1, 22}", "Date:", dateOrdered);
receipt += String.Format("\n\t{0, -18}{1, 22}", "Name:", name);
receipt += String.Format("\n\t{0, -18}{1, 22}", "Cardnumber:", cardNumberProtect);
receipt += String.Format("\n\t{0, -18}{1, 22}\n", "Month Scheduled:", monthDisplayed);
receipt += String.Format("\n{0, -7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
"Month", "Int (Gal)", "Int ($)", "Ext (Gal)", "Ext ($)", "Total (Gal)", "Total ($)");
receipt += String.Format("\n{0, -7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
"-------", "-----------", "--------------", "-----------", "--------------", "-----------", "---------------");
receipt += String.Format("\n{0,-7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
monthDisplayed, gallonsInt, costMonthInt.ToString("C2"),
gallonsExt, costMonthExt.ToString("C2"),
gallonsTotal, costTotal.ToString("C2"));

WriteLine(receipt);

ReadLine();

}
}
}

Answer 1

using System;
using static System.Console;

namespace Mid1
{
enum Months {JAN=1, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV, DEC };

class Program
{
static void Main(string[] args)
{
const double COST_PAINT_INT = 600;
const double COST_PAINT_EXT = 1200;
const int SQFT_PER_GALLON = 400;

int monthScheduled;
int flag=0;
int monthSqftInt = 0;
int monthSqftExt = 0;
int gallonsInt = 0;
int gallonsExt = 0;
int gallonsPartialInt = 0;
int gallonsPartialExt = 0;
int gallonsTotal = 0;

double costMonthInt = 0;
double costMonthExt = 0;
double costTotalInt = 0;
double costTotalExt = 0;
double costTotal = 0;

string dateOrdered = DateTime.Now.ToString("MM/dd/yyyy HH:mm:ss");
string name;
string cardNumber, cardNumberProtect;
string monthDisplayed;
string receipt;

// Ask user for their name and card number

Write("\nPlease enter your name: ");
name = ReadLine();

// Ask the user for the month scheduled to paint
do{
if(flag<1){
Write("\nPlease enter the number for the month you want your painting scheduled (1-12): ");
flag=flag+1;
}
else
Write("\nPlease enter the correct number for the month you want your painting scheduled (1-12): ");
monthScheduled = Convert.ToInt32(ReadLine());
}while(monthScheduled<=0 || monthScheduled>=13);
flag=0;
// Ask the user for the SQFT needed to paint (interior/exterior)
Write("\nPlease enter the square feet of interior walls you want painted: ");
monthSqftInt = Convert.ToInt32(ReadLine());
Write("\nPlease enter the square feet of exterior walls you want painted: ");
monthSqftExt = Convert.ToInt32(ReadLine());

// Ask the user for their 15/16 digit credit card number
do{
if(flag<1){
Write("\nPlease enter your card number (AMEX, VISA, & MC cards accepted): ");
flag=flag+1;
}
else
Write("\nPlease enter your correct card number (AMEX, VISA, & MC cards accepted): ");
cardNumber = ReadLine();
}while(cardNumber.Length!=15 && cardNumber.Length!=16);
flag=0;
// Calculations

// Calculate the gallons needed for painting
gallonsInt = monthSqftInt / SQFT_PER_GALLON;
gallonsExt = monthSqftExt / SQFT_PER_GALLON;

gallonsPartialInt = monthSqftInt % SQFT_PER_GALLON;
gallonsPartialExt = monthSqftExt % SQFT_PER_GALLON;

gallonsInt += gallonsPartialInt.CompareTo(0);
gallonsExt += gallonsPartialExt.CompareTo(0);

gallonsTotal = gallonsInt + gallonsExt;

// Calculate the cost
costMonthInt = gallonsInt * COST_PAINT_INT;
costMonthExt = gallonsExt * COST_PAINT_EXT;
costTotal = costMonthInt + costMonthExt;

// Create month displayed
monthDisplayed = monthScheduled + "-" + (Months)monthScheduled;

// Create protected card number
cardNumberProtect = "******" + cardNumber.Substring(cardNumber.Length - 4, 4);

// Display Receipt

receipt = String.Format("\n\t{0, -18}{1, 22}", "Date:", dateOrdered);
receipt += String.Format("\n\t{0, -18}{1, 22}", "Name:", name);
receipt += String.Format("\n\t{0, -18}{1, 22}", "Cardnumber:", cardNumberProtect);
receipt += String.Format("\n\t{0, -18}{1, 22}\n", "Month Scheduled:", monthDisplayed);
receipt += String.Format("\n{0, -7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
"Month", "Int (Gal)", "Int ($)", "Ext (Gal)", "Ext ($)", "Total (Gal)", "Total ($)");
receipt += String.Format("\n{0, -7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
"-------", "-----------", "--------------", "-----------", "--------------", "-----------", "---------------");
receipt += String.Format("\n{0,-7}{1, 13}{2, 16}{3, 13}{4, 16}{5, 13}{6, 17}",
monthDisplayed, gallonsInt, costMonthInt.ToString("C2"),
gallonsExt, costMonthExt.ToString("C2"),
gallonsTotal, costTotal.ToString("C2"));

WriteLine(receipt);

ReadLine();

}
}
}

OUTPUTS: