A problem in computer programming, can you help

[Ionaf]

I have a matrix called A

0  1  5  6
2  4  7 12
3  8 11 13
9 10 14 15

I would like to map it into another matrix called B initialized with all zeros. I say 'map' because the way I am doin is to read the matrix A element by element, and take the number behind it, the ones (diag) below it. For example, if my position is at 0, then I have to take 3 numbers 1, 2, 4, this also means B[0][1]=B[0][2]=B[0][4]=1, because I am trying to assign 1 to any place where there is a direction (dgraph, I mean)..

But do you have any other way to solve this instead the one I just describe ???

Please give me your ideas...

Thanks a lot

[Ionaf]

Here is what I have done but unfortunately received an error in memory access violation and system asks me to report the problem to Microsoft....
lol.

for(int i=0;i<rows;i++)
    for(int j=0;j<cols;j++){
        B[A[row][col]][A[row][col+1]]=1;
        B[A[row][col]][A[row+1][col+1]]=1;
        B[A[row][col]][A[row+1][col]]=1;
} 

Help me please........
Thanks again in advance

[Ionaf]

Why no one helps me ?
Please give me some hints ?
You have never helped me even once, can you just treat me as we are in A NORMAL RELATIONSHIP??????

[rio_bugarin]

i would love to help. but i dont know the answer as well. sorry