find the determinant of the matrix using C

Jan 19th, 2015
Computer Science
Price: $10 USD

Question description

Can anyone please debug it. It's supposed to find the determinant of the matrix and the problem is in the second function. I'm a beginner and it's due soon. I have spent 12+ hours straight on just debugging. TBH I just want someone to give me the fixed code and give a quick and simple how. Whoever can do that will be rewarded $10. The answers are supposed to be "The determinant of the matrix in matrix2.txt is 6080 The determinant of the matrix in matrix1.txt is -413 " heres the assignment lab1(5).pdf . assume that the header is fine as well as all the other parts cause i tested them. #include "lab1.h"

void findDeterminant(char filename[STRINGSIZE])


        int det = 0;

        int i, j;

        int matrix[MATSIZE][MATSIZE];

        FILE *fp3=fopen(filename, "r");

        for (i = 0; i<MATSIZE; i++)


                for (j = 0; j < MATSIZE; j++)






        det = determinant (MATSIZE, matrix);

        printf("The determinant of the matrix in %s is %d\n", filename, det);


int determinant(int n, int matrix[n][n])


        int det = 0;

        int power, i, j, l;

        int newMAT[n-1][n-1];

        if (n == 2)


                det = (matrix[0][0]* matrix [1][1]) - (matrix[1][0]*matrix[0][1]);

                printf("the determinant of the 2x2 is %d\n", det);

                return det;


        else if (n == 1){

                det = matrix [0][0];

                return  det;


        else {



                        int h = 0,k = 0;







                                        newMAT[h][k] = matrix[i+1][j];


                                        if(k == n-1)


                                        if(k == n-1)







if (l%2 == 0)


det += matrix[0][l] * determinant ((n-1), newMAT);

return det;




det -= matrix[0][l] * determinant ((n-1), newMAT);

return det;





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Jan 21st, 2015
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