Thread: How to read a .dat file in C.

  1. #1
    Registered User
    Join Date
    Jul 2008

    How to read a .dat file in C.

    I have created a .dat file (input.dat) which is a 2-dimensional array containing the x and y corordinates of points. Example

    1.000, 2.0000
    3.000, -1.000
    -2.000, 0.000 .........

    I want to open this file, read the data and use the data given here to do some calculations and store the result in another output file (output.dat) which will again be a 2-dimensional file.

    How to read the data ?

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    fopen to open the file
    fgets in a while loop, to read each line
    sscanf to parse each line
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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