random matrix diagonal problem

hi,how can I generates random matrix (using rand command) that's only its diagonal is zeros im trying to something like this but it seems the syntax is wrong\

v=[0 0 0 0 0 ]
b=rand[5,5]
c=b(diag(v) ????

I want that "c" will be 5*5 matrix the numbers are random except the diagonal that should be zeroes thank :}

Answer 1

[Matt J]

Here's another possibility. Its advantage is that it doesn't involve the creation of an additional matrix, although that would really only be important for larger matrix sizes.

 c=rand(5);
 c(1:6:end)=0;

Answer 2

[Jan]

Or:

c = rand(5,5) .* (1 - eye(5))

Matt J's method requires less arithmetic operations and is more powerful, because it allows to set the elements to any value.