Finding coordinates of a number

How can i find the coordinates of a certain variable, which will be a number, in a matrix? For example: The matrix is A=[1 2 3; 4 5 6; 7 8 9]. The variable B=C, and C=1+1. Now if you follow that, B should equal 2. But I need to know how to write a program that finds the coordinates of B, which is 2 in the case, no matter what C is.

In simpler terms, I need to know how to find the variable B in matrix A.

Answer 1

[Azzi Abdelmalek]

 [ii,jj]=find(A==B)