public void CalcStep(String op1, String op, String op2){
	      	if(current_element!=null){
	      	  	if(op.equals("+")){
	                        System.out.println(";"+current_element.E_type+" "+current_element.E_name);
	      	  		if(current_element.E_type=="INT"){
	                              AddOperation("ADDI",op1,op2,CString("T",current_register));
	      	  		}else{
	                              
	                              AddOperation("ADDF",op1,op2,CString("T",current_register));
	      	  		}
	      	  	}else if(op.equals("-")){
	                        System.out.println(";"+current_element.E_type+" "+current_element.E_name);
	      	  		if(current_element.E_type=="INT"){
	                              AddOperation("SUBI",op1,op2,CString("T",current_register));
	      	  		}else{
	                              AddOperation("SUBF",op1,op2,CString("T",current_register));
	      	  		}
	      	  	}
	      	  	opstack.push("T"+current_register);
	            }
	      	  	
	      }