Initial commit
first commit. Up to ex12.
removed .out file
up to ex22
remove unneeded files
ex25
added file for non-coding exercises
to ex13
up to 24
last exercise of chapter 2
up to ex8
up to ex7
up to ex18
up to 22 (what the hell is 22 about)
ex23
ex24
fixed error with complex number calculation.
changed where discriminant is multiplied
ex25. No idea.
30