Managed API: Refactoring and formatting.

Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>

src/api/dotnet/IntExpr.cs

@@ -0,0 +1,47 @@
+/*++
+Copyright (<c>) 2012 Microsoft Corporation
+
+Module Name:
+
+    IntExpr.cs
+
+Abstract:
+
+    Z3 Managed API: Int Expressions
+
+Author:
+
+    Christoph Wintersteiger (cwinter) 2012-11-23
+
+Notes:
+    
+--*/
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using System.Diagnostics.Contracts;
+
+namespace Microsoft.Z3
+{
+    /// <summary>
+    /// Int expressions
+    /// </summary>
+    public class IntExpr : ArithExpr
+    {
+        #region Internal
+        /// <summary> Constructor for IntExpr </summary>
+        internal protected IntExpr(Context ctx)
+            : base(ctx)
+        {
+            Contract.Requires(ctx != null);
+        }
+        internal IntExpr(Context ctx, IntPtr obj)
+            : base(ctx, obj)
+        {
+            Contract.Requires(ctx != null);
+        }
+        #endregion
+    }
+}