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diff --git a/Bachelor/Prog1/examples/ch03/Ex03_03.cpp b/Bachelor/Prog1/examples/ch03/Ex03_03.cpp
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+++ b/Bachelor/Prog1/examples/ch03/Ex03_03.cpp
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+// Exercise 3.3: ex03_03.cpp
+// Testing the math library functions.
+#include <iostream>
+
+using std::cout;
+using std::endl;
+using std::fixed;
+
+#include <iomanip>
+
+using std::setprecision;
+
+#include <cmath>
+
+int main()
+{
+   cout << fixed << setprecision( 1 ); 
+
+   cout << "sqrt(" << 900.0 << ") = " << sqrt( 900.0 )
+        << "\nsqrt(" << 9.0 << ") = " << sqrt( 9.0 );
+   cout << "\nexp(" << 1.0 << ") = " << setprecision( 6 ) 
+        << exp( 1.0 ) << "\nexp(" << setprecision( 1 ) << 2.0 
+        << ") = " << setprecision( 6 ) << exp( 2.0 );
+   cout << "\nlog(" << 2.718282 << ") = " << setprecision( 1 ) 
+        << log( 2.718282 ) 
+        << "\nlog(" << setprecision( 6 ) << 7.389056 << ") = "
+        << setprecision( 1 ) << log( 7.389056 );
+   cout << "\nlog10(" << 1.0 << ") = " << log10( 1.0 )
+        << "\nlog10(" << 10.0 << ") = " << log10( 10.0 ) 
+        << "\nlog10(" << 100.0 << ") = " << log10( 100.0 ) ;
+   cout << "\nfabs(" << 13.5 << ") = " << fabs( 13.5 )
+        << "\nfabs(" << 0.0 << ") = " << fabs( 0.0 )
+        << "\nfabs(" << -13.5 << ") = " << fabs( -13.5 );
+   cout << "\nceil(" << 9.2 << ") = " << ceil( 9.2 )
+        << "\nceil(" << -9.8 << ") = " << ceil( -9.8 );
+   cout << "\nfloor(" << 9.2 << ") = " << floor( 9.2 )
+        << "\nfloor(" << -9.8 << ") = " << floor( -9.8 );
+   cout << "\npow(" << 2.0 << ", " << 7.0 << ") = " 
+        << pow( 2.0, 7.0 ) << "\npow(" << 9.0 << ", " 
+        << 0.5 << ") = " << pow( 9.0, 0.5 );
+   cout << setprecision(3) << "\nfmod("
+        << 13.675 << ", " << 2.333 << ") = " 
+	     << fmod( 13.675, 2.333 ) << setprecision( 1 ); 
+   cout << "\nsin(" << 0.0 << ") = " << sin( 0.0 ); 
+   cout << "\ncos(" << 0.0 << ") = " << cos( 0.0 );
+   cout << "\ntan(" << 0.0 << ") = " << tan( 0.0 ) << endl;
+
+   return 0;  // indicates successful termination
+
+} // end main
+
+
+
+/**************************************************************************
+ * (C) Copyright 1992-2003 by Deitel & Associates, Inc. and Prentice      *
+ * Hall. All Rights Reserved.                                             *
+ *                                                                        *
+ * DISCLAIMER: The authors and publisher of this book have used their     *
+ * best efforts in preparing the book. These efforts include the          *
+ * development, research, and testing of the theories and programs        *
+ * to determine their effectiveness. The authors and publisher make       *
+ * no warranty of any kind, expressed or implied, with regard to these    *
+ * programs or to the documentation contained in these books. The authors *
+ * and publisher shall not be liable in any event for incidental or       *
+ * consequential damages in connection with, or arising out of, the       *
+ * furnishing, performance, or use of these programs.                     *
+ *************************************************************************/