--- loncom/homework/caparesponse/caparesponse.c	2005/12/01 22:34:10	1.19
+++ loncom/homework/caparesponse/caparesponse.c	2005/12/20 19:59:52	1.20
@@ -1,6 +1,6 @@
 /* The LearningOnline Network with CAPA 
  * CAPA wrapper code
- * $Id: caparesponse.c,v 1.19 2005/12/01 22:34:10 albertel Exp $
+ * $Id: caparesponse.c,v 1.20 2005/12/20 19:59:52 albertel Exp $
  *
  * Copyright Michigan State University Board of Trustees
  *
@@ -134,7 +134,7 @@ int caparesponse_capa_check_answer(char
 int caparesponse_get_real_response (char* unit_str, char* answer,
 				    double* scaled) {
   //double caparesponse_get_real_response (char* unit_str, char* answer) {
-  int     input_len,all_alphabet,idx,outcome,result;
+  int     input_len,all_alphabet,idx,outcome=-1,result;
   double  n_part,scale=1.0,given,target;
   char    input[ANSWER_STRING_LENG],filename[FILE_NAME_LENGTH],
     tmp_unit_str[ANSWER_STRING_LENG];
@@ -165,6 +165,8 @@ int caparesponse_get_real_response (char
   if( !all_alphabet ) {
     tmp_unit_str[0] = 0;
     outcome = split_num_unit(answer,&n_part,input,tmp_unit_str);
+  }
+  if( outcome > 0 ) {
     if( outcome > 1 ) { /* with both num and unit parts or only unit part */
       if( ans_unit != NULL ) {
 	result = check_correct_unit(tmp_unit_str,ans_unit,&scale);