clear

cv5/a_train.c

@@ -64,17 +64,20 @@ struct car* clear_train(struct car* first, const char* target) {
         while(first != NULL){
             int x = strcmp(this->value, target);
             if(x == 0){ 
-                struct car* prev = this;
+                struct car* curr = first;
-                struct car* node = this->next;
+                struct car* prev = NULL;
-                while(prev != NULL && node != NULL){
+                if(first == this){
-                    prev->next = node->next;
+                    first = this->next;
-                    free(node);
+                    free(this);
-                    prev = prev->next;
-                    if(prev != NULL){
-                        node = prev->next;
                     return 0;
                 }
+                while(curr != this){
+                    prev = curr;
+                    curr = curr->next;
+
                 } 
+                prev->next = curr->next;
+                free(this);
             }
             this = this->next;
         }