determinant?! HELP!!!

This is a discussion on determinant?! HELP!!! within the C Programming forums, part of the General Programming Boards category; hey guys, i am having trouble writing a program to compute the determinant of a matrix. i need to write ...

  1. #1
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    determinant?! HELP!!!

    hey guys, i am having trouble writing a program to compute the determinant of a matrix. i need to write a function that'll find the determinant of matrix if reading from a file. the file has 6 matrices, each one no more than a 10x10 matrix. for each set of data, m, n, and its matrix is followed. for example, the file might contain:

    5 5

    1.0 3.4 5.3 5.4 1.8
    2.3 0.1 9.6 3.6 2.6
    3.4 5.3 1.3 4.2 1.1
    1.2 1.3 4.3 4.4 5.4
    8.8 7.9 8.3 5.9 6.2

    so this means its a 2x2 matrix: [1.0, 3.4, 5.3, 5.4, 1.8; 2.3, 0.1, 9.6, 3.6, 2.6; 3.4, 5.3, 1.3, 4.2, 1.1; 1.2, 1.3, 4.3, 4.4, 5.4; 8.8, 7.9 8.3, 5.9, 6.2] with m=5, and n=5.

    how would i get my program to understand that the first line is only the dimension of the matrix, and the lines below it are the matrix? im thinking of using a recursive function...
    thanks!!!

  2. #2
    ATH0 quzah's Avatar
    Join Date
    Oct 2001
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    Put some thought into it. It's not hard.
    Code:
    while not all done
        read size into y and x
        for yc = 0; yc < y; yc++
            for xc = 0; xc < x; xc++
                read into matrix[yc][xc]
    Wheeeeee.

    Quzah.
    Hope is the first step on the road to disappointment.

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