clear

cv5/a_train.c

@@ -63,23 +63,26 @@ struct car* clear_train(struct car* first, const char* target) {
         }
     }
     struct car* this = first;
-    while(this->next->next != NULL){
-        int x = strcmp(this->next->value, target);
+    while(this->next != NULL){
+        int x = strcmp(this->value, target);
         if(x == 0){ 
-            struct car* prev = first;
-            struct car* node = first->next;
+            struct car* tmp = first;
+            struct car* prev = NULL;
             if(first == this){
                 first = this->next;
                 free(this);
                 return first;
             }
-            while(prev != NULL && node != NULL){
-                prev->next = node->next;
-                free(node);
-                prev = prev->next;
-                if(prev != NULL)
-                   node = prev->next;
+            else{
+                while(tmp->next != NULL){
+                    prev = tmp;
+                    tmp = tmp->next;
                 }
+                free(prev->next);
+                prev->next = NULL;
+            
+             }
+            
      
         }
         this = this->next;