98.09.28上課練習

module top;
integer ia,ib;
reg a,b;
wire c;
xor x1(c,a,b);
initial
begin
for(ia=0;ia<=1;ia=ia+1)
begin
a=ia;
for(i=0;ib<=1;ib=ib+1)
begin
b=ib;
#10 $display("a=%d b=%d c=%d",a,b,c);
end
end
end
end
module