/in/foo.cc: In function 'void get_decimal_recur_part(int, int)':
/in/foo.cc:9:9: warning: unused variable 'integer' [-Wunused-variable]
     int integer = a / b; // 整数部分
         ^~~~~~~
/in/foo.cc:12:30: warning: 'recurEnd' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int cur = 0, recurStart, recurEnd;
                              ^~~~~~~~
/in/foo.cc:12:18: warning: 'recurStart' may be used uninitialized in this function [-Wmaybe-uninitialized]
     int cur = 0, recurStart, recurEnd;
                  ^~~~~~~~~~