Fixing

du4/a_train.c

@@ -61,7 +61,7 @@ struct car* clear_train(struct car* first, const char* target) {
        return first;
 
     }
-    while(first!= NULL && strcmp(first->value, target)){
+    while(first!= NULL & strcmp(first->value, target) == 0){
            struct car* targetNode = first;
            first = first->next;
            free(targetNode);