Implementing a DFA

If you don't object to the go to statement, there is an easy way to implement a DFA:

q0 :  read char;
      if eof then accept string;
      if char = 0 then go to q2;
      if char = 1 then go to q1;
      
q1 :  read char;
      if eof then reject string;
      if char = 0 then go to q3;
      if char = 1 then go to q0;
      
q2 :  read char;
      if eof then reject string;
      if char = 0 then go to q0;
      if char = 1 then go to q3;
      
q3 :  read char;
      if eof then reject string;
      if char = 0 then go to q1;
      if char = 1 then go to q2;