Updated to default to 50k digits with no arguments, Makefile updates

Makefile

@@ -24,6 +24,7 @@ depend: .depend
 
 clean:
 	$(RM) $(OBJS)
+	$(RM) main
 
 distclean: clean
 	$(RM) *~ .depend

Makefile.win

@@ -1,7 +1,7 @@
 CC=x86_64-w64-mingw32-gcc
 CXX=x86_64-w64-mingw32-g++
 RM=rm -f
-CPPFLAGS=-Wall
+CPPFLAGS=-Wall -std=gnu++17
 LDFLAGS=-static
 LDLIBS=-lm
 

main.cpp

@@ -5,8 +5,8 @@
 int main(int argc, char **argv) {
     int numDigits = 0;
     if(argc < 2) {
-        std::cout << "Usage: spigot <numDigits>" << std::endl;
-        return -1;
+        numDigits = 50000;
+        std::cout << "Defaulting to 50000 digits..." << std::endl;
     } else {
         numDigits = std::atoi((const char *)argv[1]);
     }