Gaussian elimination only integers?

I'm trying to find a way to use matlab to only use integers it do gaussian elimnation. So far I have a code that works but it gives out decimal answers and I can't figure out how to keep them as integers all the way through.

 function [ x ] = IntegerGaussrevised( A, b )
%work out the number of equations 

 N = length(b); 
%Gaussian elimination 
for column=1:(N-1) 
%work on all the rows below the diagonal element 
 for row = (column+1):N 
   %work out the value of d 
   d = A(row,column)/A(column,column); 
      %do the row operation 
      A(row,:) = A(row,:)-d*A(column,:); 
      b(row)   = b(row)-d*b(column); 
 end%loop through rows  
end %loop through columns 

 %back substitution 
for row=N:-1:1 
x(row) = b(row); 
for i=(row+1):N 
  x(row) = x(row)-A(row,i)*x(i); 
end 
x(row) = x(row)/A(row,row); 
end  
%return the answer  
x = x; 
return 
end
Any help would be welcome.