Issues with expression must be a point to an object error:

I have two arrays declared:

Code:

float array1[rows][cols];
float *array2;

I fill array 2 with data and now I want to manipulate it in array 1 so I have:

Code:

for(i = 0; i < rows; i++){
for(j = 0; j < cols; j++){

  array1[i][j] = array2[i][j]

}
}

I typed this and got the old Expression must be pointer-to-object type error.

So I tried:

Code:

for(i = 0; i < rows; i++){
for(j = 0; j < cols; j++){

  array1[i][j] = &array2[i][j]

}
}

Same error so I tried:

Code:

for(i = 0; i < rows; i++){
for(j = 0; j < cols; j++){

  array1[i][j] = *array2[i][j]

}
}

Same error... so how do I make this work?

Thanks your help

> I have two arrays declared:
Nope

> float array1[rows][cols];
This is an array (well 2D array)

> float *array2;
This is an uninitialised pointer

You can use the notation array2[x] if you want, but you've got to initialise the pointer first.

If you really want array2[x][y], then start with float **array2
But the same applies, you've got to initialise it.

A board search of dynamic arrays should show you how