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C# Full Course for free/8.Conditions.md

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+# Condition
+
+## if / else
+
+```C#
+Console.WriteLint("Please enter your age: ");
+int age = Convert.ToInt32(Console.ReadLine());
+
+if (age > 100){
+    Console.WriteLine("You are to old to signed up! ");
+}
+else if(age >= 18){
+    Console.WriteLine("You are now signed up! ");
+}
+else if (age < 0){
+    Console.WriteLine("You are not born yet! ");
+}
+else{
+    Console.WriteLine("You must be 18+ to sing up! ");
+}
+```
+
+```C#
+Console.WriteLint("Please enter your name : ")
+String name = Console.ReadLine()
+
+if (name != ""){
+    Console.WriteLine("hello : " + name);
+}else{
+    Console.WriteLine("You did not enter your name !" );
+}
+
+```
+
+## switch
+
+```C#
+Console.WriteLint("What day is it today ?");
+String day = Console.ReadLine();
+
+switch(day)
+{
+    case "Monday":
+        Console.WriteLine("It's Moday!")
+        break;
+    case "Tuesday":
+        Console.WriteLine("It's Tuesday!")
+        break;
+    case "Wednesday":
+        Console.WriteLine("It's Wednesday!")
+        break;
+    case "Thursday":
+        Console.WriteLine("It's Thursday!")
+        break;
+    case "Friday":
+        Console.WriteLine("It's Friday!")
+        break;
+    case "Saturday":
+        Console.WriteLine("It's Friday!")
+        break;
+    case "Sunday":
+        Console.WriteLine("It's Friday!")
+        break;
+    default:
+        Console.WriteLine(day + "is not a day")
+        break;
+}
+
+```
+
+## Logical Operator
+
+can be used to check if more than 1 condition is true / false
+&& (AND)
+|| (OR)
+
+```C#
+Console.WriteLine("What's the temperature outside");
+double temp = Convert.ToDouble(Console.ReadLine());
+
+if(temp >= 10 && temp <= 25){
+    Console.WriteLine("It's warm outside");
+}else if(temp <= -50 || temp >= 50){
+    Console.WriteLine("DO NOT GO OUTSIDE !");
+}
+```
+