导师给的一个程序，compile以后出现：
1、 Warning: Arguments' data types are incompatible with intrinsic procedure, assume EXTERNAL.   [DREAL]
  BERNUM2 = DREAL(ZBE0)
2、Warning: Variable DELEXP is used before its value has been defined
   WRITE (UNIT = 4, FMT = 47100) DELEXP
请问这是为啥？高手们帮帮忙啊：）