带有错误的调用函数:用于快速排序的参数太少

In this program, I want to sort a list, according to price, and then i use a quick sort to sort the list, in the quick sort, I used the compare of comp_on_price, and then call the quick sort at interface. However, when I run it, it comes up with compile error of too few argument. Does there have anything to do with the calling method?In this program, I want to sort a list, accordi