How to find out coordinates of a value from a matrix?

Hello. I have a matrix

c=[1 2;
    3 4;
    5 6;
    7 8;
    9 10]; 
% and a vector 
v=[0;0;5;0;5]

Now, how to get

5=[5 6;

9 10]

and

0=[1 2;

3 4;

7 8];

Kindly help.

Answer 1

[madhan ravi]

c(v==5,:) % same for 0