Shell variables

Use a shell variable called CXXFLAGS

 #!/gnu/usr/bin/bash

 CXXFLAGS="-Wall  -g  -ansi  -pedantic"

 g++  $CXXFLAGS  -c  file1.cc
 g++  $CXXFLAGS  -c  file2.cc
 g++  $CXXFLAGS  -o  prog  file1.o  file2.o