// test: echo "95 - 6.3 * 15 - 1" | calc.exe | grep -q '=> -5.000028e-1'
// test: echo "95-6.3+15" | calc.exe | grep -q '=> 1.037e2'
// test: echo "-cos (0) + 1" | calc.exe | grep -q '=> 0'
+// test: echo "quit" | calc.exe | grep -q 'bye'
+// test: echo "help" | calc.exe | grep -q 'miscellaneous'
/* vim: set ts=4 sw=4 et: */