/in/foo.c: In function 'main':
/in/foo.c:14:9: warning: too many arguments for format [-Wformat-extra-args]
  printf("二进制数为:%1d",x,result);
         ^~~~~~~~~~~~~~~~~~~~~
/in/foo.c:4:8: warning: unused variable 'y' [-Wunused-variable]
  int x,y;
        ^