clear train hell cv4

cv4/a_train.c

@@ -76,6 +76,8 @@ struct car* clear_train(struct car* first, const char* target)
         }
     }
     struct car* prev = first;
+    struct car* bef_prev = first;
+    
 
     if(prev->next->next == NULL)
     {
@@ -98,17 +100,44 @@ struct car* clear_train(struct car* first, const char* target)
         }
     }
 
+
     while (prev->next->next != NULL)
     {
-        if(strcmp(prev->value, target))
+        if(!strcmp(prev->value, target))
         {
             struct car* third = prev->next->next;
             free(prev->next);
             prev->next = third;
             return first;
         }
+        if(prev->next->next != NULL)
+        {
+            bef_prev = prev;
+        }
         prev = prev->next;
     }
+
+    if(prev->next->next == NULL)
+    {
+        if(!strcmp(prev->value, target))
+        {
+            struct car* last = prev->next;
+            free(prev);
+            bef_prev->next = last;
+            return first;
+        }
+        else if(!strcmp(prev->next->value, target))
+        {
+            free(prev->next);
+            prev->next = NULL;
+            return first;
+        }
+        else
+        {
+            return first;
+        }
+    }
+
 	return first;
 }