how can i assign different values in an array corresponding to values in another array

Hi,

I have an array A which has certain zero and non-zero elements(I do not know the length of the array). Ex A= [1,2,3,0,5,0]

I would like to use if conditions to check for the zero and non zero elements.

Then construct arrays X, Y such that

Ex X[i]=5 where A[i]=0 and X[i]=5*pi*sin(pi/2) where A[i]!=0

Y[i]=6 where A[i]=0 and Y[i]=6*5*pi*sin(pi/2 where A[i]!= 0

what i am trying to do is (in C code):

// traversing through a matrix

for (i=0;i<=end of the matrix;i++)

if (condition(element of A =0)) X[i]=5; Y[i]=6;

else if(condition(element of another array=0)) X[i]=5; Y[i]=6;

else if(another condition)

.........

........

else X[i]=5*A[i]*B[i] Y[i]=6*A[i]*B[i]

I would really appreciate a response

Thank you.