166033 146034 155031 134031 147043 132039.
127033 118033 110035 117034 107038 126025
125027 076014 125026 137028 148025 //////
////// ////// PPC000 ////// ////// //////
////// PPC012 ////// ////// ////// //////.
...............................
我想把数据中的//////和PPC???替换成999999，用下面的语句            
                   do j=1,n
                         if(b(j)=='//////'.or.b(j)==‘PPC???’) b(j)='999999'
                          read(b(j),"(i6)")a(i,j)
                   enddo
为什么结果是这样啊
166033 146034 155031 134031 147043 132039
127033 118033 110035 117034 107038 126025
125027  76014 125026 137028 148025 126025
125027  76014 125026 137028 148025 126025
125027  76014 125026 137028 148025 126025
125027  76014 125026 137028 148025 126025
...................................
                

 

  QQ

 

  QQ

赋值999999后应跳出，不应再read(b(j),"(i6)")a(i,j)，不要用读整数的格式读