C++ ile ilgili yardım?

Arkadaşlar kuzenim yurtdışında ve aşağıdaki bilgilerle benden yardım istedi C++ ile ilgili pek bilgim yok yardımcı olabilecekler var mı aramızda?
Fiş yapmaya çalışıyorlarmış ama discount bölümünde takılmış..
İlettiği mesaj şu şekilde:
Abi selam dosya bu discount yapabildim ama bunu if bide else geciremedim
aşağıdaki liste gibi yapmaya calisiyorum ama 4 kere nasil calistirmam gerek anlamadim

Kodlar

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.27130.2026
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Project24", "Project24\Project24.vcxproj", "{F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}"
EndProject
Global
    GlobalSection(SolutionConfigurationPlatforms) = preSolution
        Debug|x64 = Debug|x64
        Debug|x86 = Debug|x86
        Release|x64 = Release|x64
        Release|x86 = Release|x86
    EndGlobalSection
    GlobalSection(ProjectConfigurationPlatforms) = postSolution
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Debug|x64.ActiveCfg = Debug|x64
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Debug|x64.Build.0 = Debug|x64
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Debug|x86.ActiveCfg = Debug|Win32
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Debug|x86.Build.0 = Debug|Win32
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Release|x64.ActiveCfg = Release|x64
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Release|x64.Build.0 = Release|x64
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Release|x86.ActiveCfg = Release|Win32
        {F1AACFAC-FFF1-4EB4-BF9E-4F40BF2FE07A}.Release|x86.Build.0 = Release|Win32
    EndGlobalSection
    GlobalSection(SolutionProperties) = preSolution
        HideSolutionNode = FALSE
    EndGlobalSection
    GlobalSection(ExtensibilityGlobals) = postSolution
        SolutionGuid = {9F51A7F4-5AEF-44A6-A6C0-89AB6937AA3A}
    EndGlobalSection
EndGlobal

İstedikleri aşamalar şunlar

1. Name, address, telephone number of the restaurant at the top and centered in the output.
2. A 'Welcome' message on a line by itself.
3. Date, Time and Order Number on their own line.
4. Up to 3 lines for items ordered and their cost - 'A Sandwich', 'M Fries', and 'M Soda'.
5. A line that will display a 'Combo Meal' discount - the discount will be 5% if sandwich is ordered with either fries or soda or the discount will be 10% if all three are ordered.
6. A line that will display the 'Tax' to be added.
7. A line that will show the 'Total' of the bill.
8. Finally a goodbye message line asking the user to visit again - again it should be centered.
9. All item names, discount, total labels should be left aligned.
10. All money values should be right aligned, should show as only 2 decimal places and should be aligned at the decimal.
11. You can define values for #1, 2, 3 and 8 in your program.
12. For the cost of sandwich, fries and/or soda as well as the tax rate as a percent --> define cost of sandwich as 5.69, cost of fries as 1.99, cost of drink as 1.79 and tax rate as 10%.
13. The name of the items ordered, discount, tax and total should be how they are shown in quotes in #4 thru 7.
14. Declare variables for the costs of the three items, the discount, the tax and the total.
15. Run your program 4 times as follows making sure that only 1 of each item can be ordered -
    1. For the first run, sandwich is ordered with fries
    2. For the second run, sandwich is ordered with soda
    3. For the third run, fries and soda are ordered
    4. For the fourth run, all 3 are ordered.
16. Name your project, cpp, image and zip files as 'CIS22AS17_yourname.*' where * is the extension.
17. Remember to include your name block and pseudocode block at the top of the file before the code.
18. Also, sprinkle comments in code where you want to highlight anything - do not write comments for each line of code.
19. Zip your CPP file and 4 screenshots into one ZIP file and upload for submission. Take care to follow submission instructions carefully (especially Mac users) or you will lose points.
20. Do not use any concepts outside of Chapters 1 thru 4 in the textbook, otherwise your grade will face deductions.

hocam solution dosyasının içini koymuşsunuz. classların olduğu kodları göndermesi gerekiyor ki yardım edecek arkadaşlar yazdığı kodu görebilsin.

İstedim şimdi teşekkürler bilgilendirme için. Geldiğinde ekleyeceğim konuya.