clear

cv5/a_train.c

@@ -62,25 +62,24 @@ struct car* clear_train(struct car* first, const char* target) {
             return first;
         }
     }
+    struct car* temp = first;
     struct car* prev = first;
-        while(prev->next!= NULL){
-            int x = strcmp(prev->next->value, target);
-            if(x == 0){ 
-                struct car* third = prev->next->next;
-                free(prev->next);
-                prev->next = third; 
-                prev->next->next = NULL;
-                return first;
+    while(temp != NULL){
+        int x = strcmp(temp->value, target);
+        if(x != 0){
+            prev = temp;
+            temp = temp->next;
         }
-            prev = prev->next;
+        else{
+            break;
         }
-        int x = strcmp(prev->next->value, target);
-        if(x == 0){
-            free(prev->next);
-            prev->next = NULL;
-            return first;
    
     }
+    if(temp == NULL){
+        return 0;
+    }
+    prev->next = temp->next;
+    free(temp);
     return first;
       
 }