Chapter1/homework/4

Src/BootCamp.Chapter/Checks.cs

@@ -17,25 +17,32 @@ public static class Checks
         public static int PromptInt(string message)
         {
             // To do: call your implementation. 
-            return 0;
+
+
+            return Lesson3.PromtInt(message);
         }
 
         public static string PromptString(string message)
         {
             // To do: call your implementation. 
-            return "";
+
+
+            return Lesson3.PromtString(message);
         }
 
         public static float PromptFloat(string message)
         {
             // To do: call your implementation. 
-            return 0;
+
+
+            return Lesson3.PromtFloat(message);
         }
 
         public static float CalculateBmi(float weight, float height)
         {
             // To do: call your implementation. 
-            return 0;
+
+            return Lesson3.CalculatingBMI(weight, height);
         }
     }
 }

Src/BootCamp.Chapter/Lesson3.cs

@@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Xml.Linq;
+
+namespace BootCamp.Chapter
+{
+    internal class Lesson3
+    {
+        public static void Demo()
+        {
+            string name, surname;
+            int age;
+            float weight, height;
+            int counter = 0;
+            while (counter < 3)
+            {
+                Console.WriteLine("Enter Name:");
+                name = Convert.ToString(Console.ReadLine());
+
+                Console.WriteLine("Enter SurName:");
+                surname = Convert.ToString(Console.ReadLine());
+
+                Console.WriteLine("Enter age:");
+                age = int.Parse(Console.ReadLine());
+
+                Console.WriteLine("Enter weight:");
+                weight = float.Parse(Console.ReadLine());
+
+                Console.WriteLine("Enter height:");
+                height = float.Parse(Console.ReadLine());
+
+
+
+                Console.WriteLine("{0} {1} is {2} years old his weight is {3} kg and his height is {4} cm.", name, surname, age, weight, height);
+
+                float bmi = (weight / height / height) * 10000f;
+                Console.WriteLine("your BMI: {0} ", bmi);
+
+
+
+
+                counter++;
+            }
+        }
+
+        public static float CalculatingBMI(float weight, float height)
+        {
+            if (weight <= 0 || height <= 0)
+            {
+                Console.WriteLine("Failed calculating BMI. Reason:");
+
+                if (height <= 0)
+                {
+                    Console.WriteLine($"Height cannot be equal or less than zero, but was {height}.");
+                }
+                if (weight <= 0)
+                {
+                    Console.WriteLine($"Weight cannot be equal or less than zero, but was {weight}.");
+                }
+
+                return -1;
+
+            }
+            float bmi = (weight / height / height);
+            return bmi;
+        }
+
+        public static int PromtInt(string msg)
+        {
+            Console.WriteLine(msg);
+            string input = Console.ReadLine();
+
+            bool isNum = int.TryParse(input, out int num);
+
+            if (!isNum)
+            {
+                Console.WriteLine($"\"{input}\" is not a valid number.");
+
+                return -1;
+            }
+            return num;
+        }
+
+        public static float PromtFloat(string msg)
+        {
+            Console.WriteLine(msg);
+            string input = Console.ReadLine();
+
+            bool isNum = float.TryParse(input, out float num);
+
+            if (!isNum)
+            {
+                Console.WriteLine($"\"{input}\" is not a valid number.");
+                return -1;
+            }
+            return num;
+        }
+        public static string PromtString(string msg)
+        {
+            Console.WriteLine(msg);
+            string input = Console.ReadLine();
+
+            if (String.IsNullOrEmpty(input))
+            {
+                Console.WriteLine("Name cannot be empty.");
+                return "-";
+            }
+            return input;
+        }
+
+
+
+    }
+}

Src/BootCamp.Chapter/Program.cs

@@ -9,6 +9,7 @@ class Program
     {
         static void Main(string[] args)
         {
+            Lesson3.Demo();
         }
     }
 }