Why doesn't my octave code run, No errors are shown - debugging

Question

I'm new to octave and I wrote this code. But even the fprintf statement on the first line isn't getting printed. Someone please help
I typed
C = strassen(zeros(1024, 1024), zeros(1024, 1024)
But nothing is being printed and the word
octave 2:> does not show up on the next line after giving the command
function [C] = strassen(A, B)
fprintf('strassen called\n');
row = size(A, 1);%Incase zeros must be padded to make dimensions even
column = size(B, 2);
common = size(A, 2);
if row*common*column <= 1000000,%Base case when less than 10^6 multiplications needed
C = zeros( row, column );
for x = 1 : row,
for y = 1 : column,
for z = 1 : common,
C(x, y) += A(x, z)*B(z, y);
end;
end;
end;
else
%Padding zeros if needed
if rem(row, 2) == 1,
A = [A; zeros(1, common)];
end;
if rem(column, 2) == 1,
B = [B zeros(common, 1)];
end;
if rem(common, 2) == 1,
A = [A zeros(size(A, 1), 1)];
B = [B; zeros(1, size(B, 2))];
end;
m = size(A, 1);
n = size(A, 2);
o = size(B, 2);
A11 = A(1:m/2, 1:n/2 );
A12 = A(1:m/2, n/2+1: n);
A21 = A(m/2+1 :m, 1:n/2);
A22 = A(m/2+1 :m ,n/2+1: n);
B11 = A(1:n/2, 1:o/2 );
B12 = A(1:n/2, o/2+1: o);
B21 = A(n/2+1 :n, 1:o/2);
B22 = A(n/2+1 :n, o/2+1: o);
M1 = strassen(A11 + A22, B11 + B22);
M2 = strassen(A21 + A22, B11);
M3 = strassen(A11, B12 - B22);
M4 = strassen(A22, B21 - B11);
M5 = strassen(A11 + A12, B22);
M6 = strassen(A21 - A11, B11 + B12);
M7 = strassen(A12 - A22, B21 + B22);
%C11 = M1 + M4 - M5 + M7;
%C12 = M3 + M5;
%C21 = M2 + M4;
%C22 = M1 + M3 - M2 + M6;
%C = [C11 C12; C21 C22];
%C = C(1:row, 1:column);
C = [(M1 + M4 - M5 + M7) (M3 + M5);(M2 + M4) (M1 + M3 - M2 + M6)](1:row, 1:column);
end;
end;

Answer 1

As Dan said there is a ")" missing in your call. But this may be a copy&paste error. If you use
C = strassen(zeros(1024, 1024), zeros(1024, 1024));
You don't see "strassen called" because the calculation takes long. I haven't waited until it finished and aborted after 30s. If you want to see the recursive calls you can flush stdout:
...
fprintf('strassen called\n');
fflush (stdout);
...
or disable the pager with more off. In this case you'll see
>> C = strassen(zeros(1024, 1024), zeros(1024, 1024));
strassen called
strassen called
strassen called
strassen called
strassen called
what I think is what you would expect.