Marithmetic arithmetic.c /^main(argc, argv)$/ getrandom arithmetic.c /^getrandom(maxval, op, operand)$/ intr arithmetic.c /^intr()$/ opnum arithmetic.c /^opnum(op)$/ penalise arithmetic.c /^penalise(value, op, operand)$/ problem arithmetic.c /^problem()$/ showstats arithmetic.c /^showstats()$/ usage arithmetic.c /^usage()$/