input file's one set header is this,

Code:

----------------------------------------------------- 
 OUTPUT FROM ASCII FILE: CAST #1 
----------------------------------------------------- 
 
 CC  Cruise Latitude Longitude YYYY MM DD  Time Cast    #Levels 
 CA    8504   50.083  -144.883 1970  1  2 18.70  3319677   70 
 
 
      z             1               2             
 
     0.0 (1) [00]  5.900 (3) [00] 32.580 (5) [00] 
    10.0 (2) [00]  5.900 (3) [00] 32.580 (5) [00] 
    20.0 (2) [00]  5.900 (3) [00] 32.580 (5) [00]

the out put file's header will look like,

Code:

Cast  CC  Cruise  Latitude  Longitude  YYYY  MM  DD  Time  Cast  #Levels           z             1               2               3

Needed columns

Cast_No
CC
Cruise
Latitude
Longitude
YYYY
MM
DD
Time
Cast
#Levels
z
z_quality
z_quality1
1 ---------------------z value (here its 0,10 and 20)
1_quality ---------its (1),(2) and (3)
1_quality_1 ------its [00], [00], and [00]
2
2_quality
2_quality_1


As you see here, 3 is an additional column, which exists for some datasets and is missing for others. So this
header has to be constructed only once. i.e. at the beginning point. In order to keep track whether the header is constructed at least once, we need to make use of flag "_onceFlag" which is set to false initially. When header is constrcuted first time, and is written in the output file, _onceFlag is set to true and next time it won't write header information in the output file.

Time being I am using C++ program to do this task, problem is I need to enter file name every time...

So if any one can help to do this task, it will be helpful...

- Thanks in advance...

- Akshay