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Hi all,
could you kindly tell me how to erase duplicate lines in a text file? such as effective algorithm or data structure?

Thanks a lot!!!

Hi,Salem

Thank you very much.

Sorry, I think I don't list my opinion clearly.

Here is my program's situation, I need use the string variable repeatly in a loop like this:

declare block :
...

Can anyone tell me?

Thanks & Bst Rgds

Yes, you're right.

But I'd resovle this problem now.

It just need add a sentence "*ptr = '\n';" after the every loop.

Thanks.

Hi all,
Now I'm coding a short program which can get the string from 2 column to 72 column in a file(total 80 column), but the run result is not right, the format of the outfile is not...

It's really well, I hope that I can finish it by your advice.

Thanks again.

Hi,
in the recent day, I get a mission about coding a pgm which can analyze the variables and function of the old PL/I programs. It's really difficult to me, I want to code this pgm by using...