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how to fix these errors?

Deeyumm (6)
So, I have this homework where we are working with overloading. It has a double pointer with 2d matrix. I did the overloading part the right way, the following code was given for us to copy and paste it so the program would work, but these given functions don't seems to work, how to fix these errors?

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//inverse function
 void Inverse(double A[][maxSize], double B[][maxSize], int N)
{
int row, column, step, i;
double mult, C[maxSize][2*maxSize] = {{0}};

for(row=0; row<N; row++)
       for(column=0; column<N; column++)
            C[row][column] = A[row][column];

    for(i=0; i<N; i++)
        C[i][N+i] = 1;

for(step=0; step<N-1; step++)
{
     for(row=step+1; row<N; row++)
     {
          mult = C[row][step] / C[step][step];
          for (column=step;column<2*N; column++)
              C[row][column]-= mult*C[step][column];
      }
}

for(step=1; step<=N-1; step++)
{
   for(row=N-step-1; row>=0; row--)
   {
        mult = C[row][N-step] / C[N-step][N-step];
        for (column=N; column<2*N; column++)
             C[row][column]-=
mult*C[N-step][column];
        }
    }

for(row=0; row<N; row++)
   for(column=0; column<N; column++)
       B[row][column] = C[row][N+column] / C[row][row];
}


// solve function
void matrix::Solve()
{
    double B[][columns];
    double b[];
    double x[];
    int N;
	int row, column, step, iStep, i;
	double sum, maxElement, temp, mult;
	double A[columns][columns+1];

for(row=0; row<N; row++)
 {
        for(column=0; column<N; column++)
            A[row][column] = B[row][column];
        A[row][N] = b[row];
 }

for (step=0; step<N-1; step++)
{
    maxElement=A[step][step];
    iStep=step;
    for ( row=step+1; row<N; row++ )
       if(fabs(maxElement)< fabs(A[row][step]))
       {
             maxElement=A[row][step];
             iStep=row;
        }

     for (column=step; column<=N; column++)
     {
            temp=A[step][column];
            A[step][column]=A[iStep][column];
            A[iStep][column]=temp;
        }

       for (row=step+1; row<N; row++)
      {
      mult=A[row][step]/A[step][step];
      for (column=step; column<=N; column++)
          A[row][column]-= mult*A[step][column];
      }
    }

    x[N-1]=A[N-1][N]/A[N-1][N-1];
    for (row=N-2; row>=0; row--)
   {
      sum=0;
      for (column=row+1; column<N; column++)
	sum+= A[row][column]*x[column];
	x[row]=(A[row][N] - sum)/A[row][row];
   }
}
//determinant function
double Determinant(double A[][maxSize], int N)
{
	int row, column, step, i;
	double mult;

    for(step=0; step<N-1; step++)
    {
        for(row=step+1; row<N; row++)
        {
            mult = A[row][step] / A[step][step];
            for (column=step; column<N; column++)
                A[row][column]-=         mult*A[step][column];
        }
    }

    mult = 1;
	for(row=0; row<N; row++)
        mult = mult * A[row][row];

    return mult;
}
keskiverto (10365)
What errors?
Deeyumm (6)
some of them include the maxSize/row/column, I didn't know how to fix them
Last edited on
keskiverto (10365)
You do mean something like the 'maxsize' in
//inverse function
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void Inverse( double A[][maxSize], double B[][maxSize], int N )
{
  int row, column, step, i;
  double mult, C[maxSize][2*maxSize] = {{0}};
  for(row=0; row<N; row++)
    for(column=0; column<N; column++)
      C[row][column] = A[row][column];

What can you tell about the 'maxsize' based on the syntax of this code fragment?
What can you tell about the 'N'?


You wrote that this code fragment has been given to you and is thus assumed to be correct?
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