Docu: added line numbers in listings

doc/tex/c_examples.tex

+\lstset{frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible, numbers=left, stepnumber=5}
+
 \chapter{\label{example}Examples}
 
 This appendix contains complete examples to write, read
@@ -11,7 +13,7 @@ Here is an example using {\CDI} to write a netCDF dataset with
 on surface level and the second variable is a 3D field on 5 pressure
 levels. Both variables are on the same lon/lat grid. 
 
-\lstinputlisting[language=C, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=C]
 {../../examples/cdi_write.c}
 
 
@@ -19,7 +21,7 @@ levels. Both variables are on the same lon/lat grid.
 
 This is the {\tt ncdump -h} output of the resulting netCDF file {\tt example.nc}.
 
-\begin{lstlisting}[frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\begin{lstlisting}[]
 netcdf example {
 dimensions:
         lon = 12 ;
@@ -59,7 +61,7 @@ data:
 
 This example reads the netCDF file {\tt example.nc} from \htmlref{Appendix B.1}{example_write}.
 
-\lstinputlisting[language=C, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=C]
 {../../examples/cdi_read.c}
 
 
@@ -69,5 +71,5 @@ This example reads the netCDF file {\tt example.nc} from \htmlref{Appendix B.1}{
 and writes the result to a GRIB dataset by simple setting the output file type
 to {\tt FILETYPE\_GRB}.
 
-\lstinputlisting[language=C, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=C]
 {../../examples/cdi_copy.c}

doc/tex/f_examples.tex

+\lstset{frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible, numbers=left, stepnumber=5}
+
 \chapter{\label{example}Examples}
 
 This appendix contains complete examples to write, read
@@ -11,7 +13,7 @@ Here is an example using {\CDI} to write a netCDF dataset with
 on surface level and the second variable is a 3D field on 5 pressure
 levels. Both variables are on the same lon/lat grid. 
 
-\lstinputlisting[language=Fortran, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=Fortran]
 {../../examples/cdi_write_f.f}
 
 
@@ -19,7 +21,7 @@ levels. Both variables are on the same lon/lat grid.
 
 This is the {\tt ncdump -h} output of the resulting netCDF file {\tt example.nc}.
 
-\begin{lstlisting}[frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\begin{lstlisting}[]
 netcdf example {
 dimensions:
         lon = 12 ;
@@ -59,7 +61,7 @@ data:
 
 This example reads the netCDF file {\tt example.nc} from \htmlref{Appendix \ref{example_write}}{example_write}.
 
-\lstinputlisting[language=Fortran, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=Fortran]
 {../../examples/cdi_read_f.f}
 
 
@@ -69,7 +71,7 @@ This example reads the netCDF file {\tt example.nc} from \htmlref{Appendix B.1}{
 and writes the result to a GRIB dataset by simple setting the output file type
 to {\tt FILETYPE\_GRB}.
 
-\lstinputlisting[language=Fortran, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=Fortran]
 {../../examples/cdi_copy_f.f}
 
 \section{\label{examples_f2003}Fortran 2003: mo\_cdi and iso\_c\_binding}
@@ -85,7 +87,8 @@ have to be convertet to C charcters by
 \item take {\tt ctrim} from {\tt mo\_cdi} for {\tt CHARACTER(type=c\_char)} variables
 \end{itemize}
 
-\lstinputlisting[language=Fortran, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+\lstinputlisting[language=Fortran]
 {../../examples/cdi_read_f2003.f90}
-\lstinputlisting[language=Fortran, frame=single, backgroundcolor=\color{pyellow}, basicstyle=\small, columns=flexible]
+
+\lstinputlisting[language=Fortran]
 {../../examples/cdi_write_f2003.f90}