fix(guide): simplify directory structure

guide/english/csharp/if-else-statement/index.md

@@ -0,0 +1,40 @@
+---
+title: If Else Statement
+---
+
+# If Else Statement
+
+The If-Else statement executes a block of code depending on whether your precondition is fullfilled or not.
+
+## Example
+```
+
+if(boolean expression)
+{
+// execute this code block if expression evalutes to true
+}
+else
+{
+// always execute this code block when above if expression is false
+}
+
+
+int Price = 30;
+
+If (Price = 30)
+{
+  Console.WriteLine("Price is equal to 30.");
+}
+
+Else 
+{
+  Console.WriteLine("Price is not equal to 30.");
+}
+```
+
+Since we already declared our int Price to be 30, this will be the expected output.
+
+## Output
+```
+Price is equal to 30.
+```