gcc -o bigisort -g -O0 -Wall -lgmp -lncurses bigint.c
./bigisort -i -f bigints.dat
-f, --file=filename Input filename.
-h, --heapsort Set sort algo to heapsort.
-i, --interactive Interactive mode with text UI.
-m, --mergesort Set sort algo to mergesort.
--pthreads Switch threading On/oFf.
-q, --quicksort Set sort algo to quicksort.
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version