不错书对C++/C程序员很有用的大家不要错过.

				#include 
				
				void showflags(void);
				
				void main(void)
				 {
				   showflags();
				   long f = ios::showpos | ios::showbase | ios::oct | ios::right;
				   cout.flags(f);
				   showflags();
				 }
				
				void showflags(void)
				 {
				   long flag_set, i;
				   int j;
				   char flags[15][12] = {
				      "skipws", "left", "right", "internal", "dec",
				      "oct", "hex", "showbase", "showpoint", "uppercase",
				      "showpos", "scientific", "fixed", "unitbuf",
				   };
				
				   flag_set = cout.flags();
				   for (i=1, j=0; i				      if (i & flag_set)
				         cout 				      else
				         cout 				   cout 				 }