MATLAB: Comparing two matrices and obtain the un-repeated rows

matrices

if i have two matrices A and B

where B is apart of A ,for example:

A=[ 1 2 ; 3 4 ; 5 6 ; 7 8 ; 9 10 ]

B=[ 7 8 ; 1 2 ; 9 10 ]

i want to compare between them and get matrix C where C = A without B

C=[ 3 4 ; 5 6 ]

A(~ismember(A, B, 'rows'), :)

a = [1 2 3];
b = [1 2 3;
     4 5 6;
     7 8 9];
i = ismember(b , a, 'rows');
c = b(~i,:)

See ismember() with the 'rows' option. And use logical indexing.