Stats

  • Locked Locked
  • Replies 3
  • Subscribers 142
  • Views 14943
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

problem in fscanf

Aritra

 Hi ,

     I am tring to scan a file and extract only thelines which has 2 integer. eg :

120 230

I am using the fscanf to do the job like fscanf(PortDef "%d %d\n" VarName)

Its flags error for the above code. 

Please assist.

Parents

  • It generally helps if  you actually say what the error you're seeing is.

    In this case (assuming you showed the code properly above), the error is because you are asking for two integers, yet only supplied the name of one variable to put them in. So you'd get:

     fscanf(a "%d %d\n" VarName)
    *Error* fscanf: too many format specs. - ("%d %d\n" VarName)

    If you did:

     fscanf(a "%d %d\n" VarName1 VarName2)

    it would work. Note that fscanf returns the number of items it actually read - so if it successfully read two integers, it would return 2. If it hits something other than an integer in the input stream, it would return less than 2, and subsequent calls would probably return 0 - the pointer in the file would not proceed.

    I'm having to guess a bit as to what your problem really is - but hopefully some of the above will help.

    Andrew.

Reply

  • It generally helps if  you actually say what the error you're seeing is.

    In this case (assuming you showed the code properly above), the error is because you are asking for two integers, yet only supplied the name of one variable to put them in. So you'd get:

     fscanf(a "%d %d\n" VarName)
    *Error* fscanf: too many format specs. - ("%d %d\n" VarName)

    If you did:

     fscanf(a "%d %d\n" VarName1 VarName2)

    it would work. Note that fscanf returns the number of items it actually read - so if it successfully read two integers, it would return 2. If it hits something other than an integer in the input stream, it would return less than 2, and subsequent calls would probably return 0 - the pointer in the file would not proceed.

    I'm having to guess a bit as to what your problem really is - but hopefully some of the above will help.

    Andrew.

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.