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2-csharp/lesson-3-projects/challenge-project/Final/Final.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

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2-csharp/lesson-3-projects/challenge-project/Final/Program.cs Normal file
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using System;
using System.IO;
// the ourAnimals array will store the following:
string animalSpecies = "";
string animalID = "";
string animalAge = "";
string animalPhysicalDescription = "";
string animalPersonalityDescription = "";
string animalNickname = "";
// variables that support data entry
int maxPets = 8;
string? readResult;
string menuSelection = "";
int petCount = 0;
string anotherPet = "y";
bool validEntry = false;
int petAge = 0;
// array used to store runtime data, there is no persisted data
string[,] ourAnimals = new string[maxPets, 6];
// create some initial ourAnimals array entries
for (int i = 0; i < maxPets; i++)
{
switch (i)
{
case 0:
animalSpecies = "dog";
animalID = "d1";
animalAge = "2";
animalPhysicalDescription = "medium sized cream colored female golden retriever weighing about 65 pounds. housebroken.";
animalPersonalityDescription = "loves to have her belly rubbed and likes to chase her tail. gives lots of kisses.";
animalNickname = "lola";
break;
case 1:
animalSpecies = "dog";
animalID = "d2";
animalAge = "9";
animalPhysicalDescription = "large reddish-brown male golden retriever weighing about 85 pounds. housebroken.";
animalPersonalityDescription = "loves to have his ears rubbed when he greets you at the door, or at any time! loves to lean-in and give doggy hugs.";
animalNickname = "loki";
break;
case 2:
animalSpecies = "cat";
animalID = "c3";
animalAge = "1";
animalPhysicalDescription = "small white female weighing about 8 pounds. litter box trained.";
animalPersonalityDescription = "friendly";
animalNickname = "Puss";
break;
case 3:
animalSpecies = "cat";
animalID = "c4";
animalAge = "?";
animalPhysicalDescription = "";
animalPersonalityDescription = "";
animalNickname = "";
break;
default:
animalSpecies = "";
animalID = "";
animalAge = "";
animalPhysicalDescription = "";
animalPersonalityDescription = "";
animalNickname = "";
break;
}
ourAnimals[i, 0] = "ID #: " + animalID;
ourAnimals[i, 1] = "Species: " + animalSpecies;
ourAnimals[i, 2] = "Age: " + animalAge;
ourAnimals[i, 3] = "Nickname: " + animalNickname;
ourAnimals[i, 4] = "Physical description: " + animalPhysicalDescription;
ourAnimals[i, 5] = "Personality: " + animalPersonalityDescription;
}
// display the top-level menu options
do
{
Console.Clear();
Console.WriteLine("Welcome to the Contoso PetFriends app. Your main menu options are:");
Console.WriteLine(" 1. List all of our current pet information");
Console.WriteLine(" 2. Add a new animal friend to the ourAnimals array");
Console.WriteLine(" 3. Ensure animal ages and physical descriptions are complete");
Console.WriteLine(" 4. Ensure animal nicknames and personality descriptions are complete");
Console.WriteLine(" 5. Edit an animal’s age");
Console.WriteLine(" 6. Edit an animal’s personality description");
Console.WriteLine(" 7. Display all cats with a specified characteristic");
Console.WriteLine(" 8. Display all dogs with a specified characteristic");
Console.WriteLine();
Console.WriteLine("Enter your selection number (or type Exit to exit the program)");
readResult = Console.ReadLine();
if (readResult != null)
{
menuSelection = readResult.ToLower();
// NOTE: We could put a do statement around the menuSelection entry to ensure a valid entry, but we
// use a conditional statement below that only processes the valid entry values, so the do statement
// is not required here.
}
// use switch-case to process the selected menu option
switch (menuSelection)
{
case "1":
// List all of our current pet information
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 0] != "ID #: ")
{
Console.WriteLine();
for (int j = 0; j < 6; j++)
{
Console.WriteLine(ourAnimals[i, j].ToString());
}
}
}
Console.WriteLine("\n\rPress the Enter key to continue");
readResult = Console.ReadLine();
break;
case "2":
// Add a new animal friend to the ourAnimals array
//
// The ourAnimals array contains
// 1. the species (cat or dog). a required field
// 2. the ID number - for example C17
// 3. the pet's age. can be blank at initial entry.
// 4. the pet's nickname. can be blank.
// 5. a description of the pet's physical appearance. can be blank.
// 6. a description of the pet's personality. can be blank.
anotherPet = "y";
petCount = 0;
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 0] != "ID #: ")
{
petCount += 1;
}
}
if (petCount < maxPets)
{
Console.WriteLine($"We currently have {petCount} pets that need homes. We can manage {(maxPets - petCount)} more.");
}
while (anotherPet == "y" && petCount < maxPets)
{
// get species (cat or dog) - string animalSpecies is a required field
do
{
Console.WriteLine("\n\rEnter 'dog' or 'cat' to begin a new entry");
readResult = Console.ReadLine();
if (readResult != null)
{
animalSpecies = readResult.ToLower();
if (animalSpecies != "dog" && animalSpecies != "cat")
{
//Console.WriteLine($"You entered: {animalSpecies}.");
validEntry = false;
}
else
{
validEntry = true;
}
}
} while (validEntry == false);
// build the animal the ID number - for example C1, C2, D3 (for Cat 1, Cat 2, Dog 3)
animalID = animalSpecies.Substring(0, 1) + (petCount + 1).ToString();
// get the pet's age. can be ? at initial entry.
do
{
Console.WriteLine("Enter the pet's age or enter ? if unknown");
readResult = Console.ReadLine();
if (readResult != null)
{
animalAge = readResult;
if (animalAge != "?")
{
validEntry = int.TryParse(animalAge, out petAge);
}
}
} while (validEntry == false);
// get a description of the pet's physical appearance - animalPhysicalDescription can be blank.
do
{
Console.WriteLine("Enter a physical description of the pet (size, color, gender, weight, housebroken)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPhysicalDescription = readResult.ToLower();
if (animalPhysicalDescription == "")
{
animalPhysicalDescription = "tbd";
}
}
} while (validEntry == false);
// get a description of the pet's personality - animalPersonalityDescription can be blank.
do
{
Console.WriteLine("Enter a description of the pet's personality (likes or dislikes, tricks, energy level)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPersonalityDescription = readResult.ToLower();
if (animalPersonalityDescription == "")
{
animalPersonalityDescription = "tbd";
}
}
} while (validEntry == false);
// get the pet's nickname. animalNickname can be blank.
do
{
Console.WriteLine("Enter a nickname for the pet");
readResult = Console.ReadLine();
if (readResult != null)
{
animalNickname = readResult.ToLower();
if (animalNickname == "")
{
animalNickname = "tbd";
}
}
} while (validEntry == false);
// store the pet information in the ourAnimals array (zero based)
ourAnimals[petCount, 0] = "ID #: " + animalID;
ourAnimals[petCount, 1] = "Species: " + animalSpecies;
ourAnimals[petCount, 2] = "Age: " + animalAge;
ourAnimals[petCount, 3] = "Nickname: " + animalNickname;
ourAnimals[petCount, 4] = "Physical description: " + animalPhysicalDescription;
ourAnimals[petCount, 5] = "Personality: " + animalPersonalityDescription;
// increment petCount (the array is zero-based, so we increment the counter after adding to the array)
petCount = petCount + 1;
// check maxPet limit
if (petCount < maxPets)
{
// another pet?
Console.WriteLine("Do you want to enter info for another pet (y/n)");
do
{
readResult = Console.ReadLine();
if (readResult != null)
{
anotherPet = readResult.ToLower();
}
} while (anotherPet != "y" && anotherPet != "n");
}
//NOTE: The value of anotherPet (either "y" or "n") is evaluated in the while statement expression - at the top of the while loop
}
if (petCount >= maxPets)
{
Console.WriteLine("We have reached our limit on the number of pets that we can manage.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
}
break;
case "3":
// Ensure animal ages and physical descriptions are complete
//
// ourAnimals[i, 2] = "Age: " + animalAge;
// ourAnimals[i, 4] = "Physical description: " + animalPhysicalDescription;
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 2] == "Age: ?" && ourAnimals[i, 0] != "ID #: ")
{
do
{
Console.WriteLine($"Enter an age for {ourAnimals[i, 0]}");
readResult = Console.ReadLine();
if (readResult != null)
{
animalAge = readResult;
validEntry = int.TryParse(animalAge, out petAge);
}
} while (validEntry == false);
ourAnimals[i, 2] = "Age: " + animalAge.ToString();
}
if (ourAnimals[i, 4] == "Physical description: " && ourAnimals[i, 0] != "ID #: ")
{
do
{
Console.WriteLine($"Enter a physical description for {ourAnimals[i, 0]} (size, color, gender, weight, housebroken)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPhysicalDescription = readResult.ToLower();
if (animalPhysicalDescription == "")
{
validEntry = false;
}
else
{
validEntry = true;
}
}
} while (validEntry == false);
ourAnimals[i, 4] = "Physical description: " + animalPhysicalDescription;
}
}
Console.WriteLine("\n\rAge and physical description fields are complete for all of our friends. \n\rPress the Enter key to continue");
readResult = Console.ReadLine();
break;
case "4":
// Ensure animal nickname and personality descriptions are complete
//
// ourAnimals[i, 3] = "Nickname: " + animalNickname;
// ourAnimals[i, 5] = "Personality: " + animalPersonalityDescription;
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 3] == "Nickname: " && ourAnimals[i, 0] != "ID #: ")
{
do
{
Console.WriteLine($"Enter a nickname for {ourAnimals[i, 0]}");
readResult = Console.ReadLine();
if (readResult != null)
{
animalNickname = readResult;
if (animalNickname == "")
{
validEntry = false;
}
else
{
validEntry = true;
}
}
} while (validEntry == false);
ourAnimals[i, 3] = "Nickname: " + animalNickname;
}
if (ourAnimals[i, 5] == "Personality: " && ourAnimals[i, 0] != "ID #: ")
{
do
{
//"Enter a description of the pet's personality (likes or dislikes, tricks, energy level"
Console.WriteLine($"Enter a personality description for {ourAnimals[i, 0]} (likes or dislikes, tricks, energy level)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPersonalityDescription = readResult.ToLower();
if (animalPersonalityDescription == "")
{
validEntry = false;
}
else
{
validEntry = true;
}
}
} while (validEntry == false);
ourAnimals[i, 5] = "Personality: " + animalPersonalityDescription;
}
}
Console.WriteLine("\n\rAge and physical description fields are complete for all of our friends. \n\rPress the Enter key to continue");
readResult = Console.ReadLine();
break;
case "5":
// Edit an animal’s age");
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "6":
// Edit an animal’s personality description");
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "7":
// Display all cats with a specified characteristic
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "8":
// Display all dogs with a specified characteristic
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
default:
break;
}
} while (menuSelection != "exit");

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2-csharp/lesson-3-projects/challenge-project/LICENSE Normal file
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MIT License
Copyright (c) 2023 Microsoft Learning
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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2-csharp/lesson-3-projects/challenge-project/README.md Normal file
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# Challenge-project-branching-looping-CSharp
Starter and Solution code for the Challenge project: "Develop conditional branching and looping structures in C#" from the Microsoft Learn collection "Getting started with C#"

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2-csharp/lesson-3-projects/challenge-project/Starter/Program.cs Normal file
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using System;
using System.IO;
// the ourAnimals array will store the following:
string animalSpecies = "";
string animalID = "";
string animalAge = "";
string animalPhysicalDescription = "";
string animalPersonalityDescription = "";
string animalNickname = "";
// variables that support data entry
int maxPets = 8;
string? readResult;
string menuSelection = "";
int petCount = 0;
string anotherPet = "y";
bool validEntry = false;
int petAge = 0;
// array used to store runtime data, there is no persisted data
string[,] ourAnimals = new string[maxPets, 6];
// create some initial ourAnimals array entries
for (int i = 0; i < maxPets; i++)
{
switch (i)
{
case 0:
animalSpecies = "dog";
animalID = "d1";
animalAge = "2";
animalPhysicalDescription = "medium sized cream colored female golden retriever weighing about 65 pounds. housebroken.";
animalPersonalityDescription = "loves to have her belly rubbed and likes to chase her tail. gives lots of kisses.";
animalNickname = "lola";
break;
case 1:
animalSpecies = "dog";
animalID = "d2";
animalAge = "9";
animalPhysicalDescription = "large reddish-brown male golden retriever weighing about 85 pounds. housebroken.";
animalPersonalityDescription = "loves to have his ears rubbed when he greets you at the door, or at any time! loves to lean-in and give doggy hugs.";
animalNickname = "loki";
break;
case 2:
animalSpecies = "cat";
animalID = "c3";
animalAge = "1";
animalPhysicalDescription = "small white female weighing about 8 pounds. litter box trained.";
animalPersonalityDescription = "friendly";
animalNickname = "Puss";
break;
case 3:
animalSpecies = "cat";
animalID = "c4";
animalAge = "?";
animalPhysicalDescription = "";
animalPersonalityDescription = "";
animalNickname = "";
break;
default:
animalSpecies = "";
animalID = "";
animalAge = "";
animalPhysicalDescription = "";
animalPersonalityDescription = "";
animalNickname = "";
break;
}
ourAnimals[i, 0] = "ID #: " + animalID;
ourAnimals[i, 1] = "Species: " + animalSpecies;
ourAnimals[i, 2] = "Age: " + animalAge;
ourAnimals[i, 3] = "Nickname: " + animalNickname;
ourAnimals[i, 4] = "Physical description: " + animalPhysicalDescription;
ourAnimals[i, 5] = "Personality: " + animalPersonalityDescription;
}
// display the top-level menu options
do
{
Console.Clear();
Console.WriteLine("Welcome to the Contoso PetFriends app. Your main menu options are:");
Console.WriteLine(" 1. List all of our current pet information");
Console.WriteLine(" 2. Add a new animal friend to the ourAnimals array");
Console.WriteLine(" 3. Ensure animal ages and physical descriptions are complete");
Console.WriteLine(" 4. Ensure animal nicknames and personality descriptions are complete");
Console.WriteLine(" 5. Edit an animal’s age");
Console.WriteLine(" 6. Edit an animal’s personality description");
Console.WriteLine(" 7. Display all cats with a specified characteristic");
Console.WriteLine(" 8. Display all dogs with a specified characteristic");
Console.WriteLine();
Console.WriteLine("Enter your selection number (or type Exit to exit the program)");
readResult = Console.ReadLine();
if (readResult != null)
{
menuSelection = readResult.ToLower();
// NOTE: We could put a do statement around the menuSelection entry to ensure a valid entry, but we
// use a conditional statement below that only processes the valid entry values, so the do statement
// is not required here.
}
// use switch-case to process the selected menu option
switch (menuSelection)
{
case "1":
// List all of our current pet information
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 0] != "ID #: ")
{
Console.WriteLine();
for (int j = 0; j < 6; j++)
{
Console.WriteLine(ourAnimals[i, j].ToString());
}
}
}
Console.WriteLine("\n\rPress the Enter key to continue");
readResult = Console.ReadLine();
break;
case "2":
// Add a new animal friend to the ourAnimals array
//
// The ourAnimals array contains
// 1. the species (cat or dog). a required field
// 2. the ID number - for example C17
// 3. the pet's age. can be blank at initial entry.
// 4. the pet's nickname. can be blank.
// 5. a description of the pet's physical appearance. can be blank.
// 6. a description of the pet's personality. can be blank.
anotherPet = "y";
petCount = 0;
for (int i = 0; i < maxPets; i++)
{
if (ourAnimals[i, 0] != "ID #: ")
{
petCount += 1;
}
}
if (petCount < maxPets)
{
Console.WriteLine($"We currently have {petCount} pets that need homes. We can manage {(maxPets - petCount)} more.");
}
while (anotherPet == "y" && petCount < maxPets)
{
// get species (cat or dog) - string animalSpecies is a required field
do
{
Console.WriteLine("\n\rEnter 'dog' or 'cat' to begin a new entry");
readResult = Console.ReadLine();
if (readResult != null)
{
animalSpecies = readResult.ToLower();
if (animalSpecies != "dog" && animalSpecies != "cat")
{
//Console.WriteLine($"You entered: {animalSpecies}.");
validEntry = false;
}
else
{
validEntry = true;
}
}
} while (validEntry == false);
// build the animal the ID number - for example C1, C2, D3 (for Cat 1, Cat 2, Dog 3)
animalID = animalSpecies.Substring(0, 1) + (petCount + 1).ToString();
// get the pet's age. can be ? at initial entry.
do
{
Console.WriteLine("Enter the pet's age or enter ? if unknown");
readResult = Console.ReadLine();
if (readResult != null)
{
animalAge = readResult;
if (animalAge != "?")
{
validEntry = int.TryParse(animalAge, out petAge);
}
}
} while (validEntry == false);
// get a description of the pet's physical appearance - animalPhysicalDescription can be blank.
do
{
Console.WriteLine("Enter a physical description of the pet (size, color, gender, weight, housebroken)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPhysicalDescription = readResult.ToLower();
if (animalPhysicalDescription == "")
{
animalPhysicalDescription = "tbd";
}
}
} while (validEntry == false);
// get a description of the pet's personality - animalPersonalityDescription can be blank.
do
{
Console.WriteLine("Enter a description of the pet's personality (likes or dislikes, tricks, energy level)");
readResult = Console.ReadLine();
if (readResult != null)
{
animalPersonalityDescription = readResult.ToLower();
if (animalPersonalityDescription == "")
{
animalPersonalityDescription = "tbd";
}
}
} while (validEntry == false);
// get the pet's nickname. animalNickname can be blank.
do
{
Console.WriteLine("Enter a nickname for the pet");
readResult = Console.ReadLine();
if (readResult != null)
{
animalNickname = readResult.ToLower();
if (animalNickname == "")
{
animalNickname = "tbd";
}
}
} while (validEntry == false);
// store the pet information in the ourAnimals array (zero based)
ourAnimals[petCount, 0] = "ID #: " + animalID;
ourAnimals[petCount, 1] = "Species: " + animalSpecies;
ourAnimals[petCount, 2] = "Age: " + animalAge;
ourAnimals[petCount, 3] = "Nickname: " + animalNickname;
ourAnimals[petCount, 4] = "Physical description: " + animalPhysicalDescription;
ourAnimals[petCount, 5] = "Personality: " + animalPersonalityDescription;
// increment petCount (the array is zero-based, so we increment the counter after adding to the array)
petCount = petCount + 1;
// check maxPet limit
if (petCount < maxPets)
{
// another pet?
Console.WriteLine("Do you want to enter info for another pet (y/n)");
do
{
readResult = Console.ReadLine();
if (readResult != null)
{
anotherPet = readResult.ToLower();
}
} while (anotherPet != "y" && anotherPet != "n");
}
//NOTE: The value of anotherPet (either "y" or "n") is evaluated in the while statement expression - at the top of the while loop
}
if (petCount >= maxPets)
{
Console.WriteLine("We have reached our limit on the number of pets that we can manage.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
}
break;
case "3":
// Ensure animal ages and physical descriptions are complete
Console.WriteLine("Challenge Project - please check back soon to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "4":
// Ensure animal nicknames and personality descriptions are complete
Console.WriteLine("Challenge Project - please check back soon to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "5":
// Edit an animal’s age");
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "6":
// Edit an animal’s personality description");
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "7":
// Display all cats with a specified characteristic
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
case "8":
// Display all dogs with a specified characteristic
Console.WriteLine("UNDER CONSTRUCTION - please check back next month to see progress.");
Console.WriteLine("Press the Enter key to continue.");
readResult = Console.ReadLine();
break;
default:
break;
}
} while (menuSelection != "exit");

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2-csharp/lesson-3-projects/challenge-project/Starter/Starter.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net7.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>