Hi all! would like some help, hopefully someone can enlighten me.
My program has for input a 2d array where the number of rows and columns is decided by the user.

So in the code below, the matrix A is the input matrix and the matrix Q is the matrix to be calculated with the function maqr.
however, as i'm reusing the matrix A as a 1d array in the function maqr, i'm not too sure how to declare the arrays in his function.
Any help will be apreciated!

``````void main(void)

{
extern int maqr();
int i, j;                  /* Loop counter                   */
int w;
int R,C;                   /* Order of Matrix                */
double**A;             /* Matrix                      */
double**Q;

printf("Please enter rows of Matrix  A \n");
scanf("%d",&R);
printf("Please enter columns of Matrix  A \n";
scanf("%d",&C);

maqr(A,R,C,Q)

A = (double **) malloc(sizeof(double *) * R);
for(i = 0; i < R; i++)
{
A[i] = (double *) malloc(sizeof(double) * C);
}

Q = (double **) malloc(sizeof(double *) * R);
for(i = 0; i < R; i++)
{
Q[i] = (double *) malloc(sizeof(double) * R);
}

int maqr(a,m,n,q)
int m,n;
double a[];
double q[];``````
Used code tags on first post :)
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Last Post by jephthah

Declare maqr() like this:

``````int maqr(double* a[], int m, int n, double* q[])
{
// and access the elements of a and q like this:
double x = *a[0];
}``````

i believe you will want to call the maqr() function after you've allocated the memory sizes.

also, remember to always use "free" after you're done with the allocated arrays.

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