• There must the a default target which builds the items in the exercise that you have made, e.g.:
  all: A B C
• The sub-targets A, B, C,... must clearly show what the result sould be, e.g.:
  A: out.A.txt plot.A.png
• The subroutines/functions that implement numerical methods must be in separate files and must be compiled separately.
• For each item in the exercise there must be a main function which prepares the input data, calls the necessary method-function, and arranges the output. The output must clearly illustrate that the method-functions work as intended.
• The main functions must be written individually. Also the illustrations of the workings of the methods must be individual.
• The exercises must be built (and left built so that I can see the output) before you can claim points for them.
• There must be a "clean" target and it must indeed clean up the directory.
• I must be able to copy your exercise to my directory and build any item in it with e.g.
  make clean; make B