因为，你在循环中更改了 i 的值，所以就挂了。可以将第 6 行改一下试一下： ```cpp for (int i = a; i <= b; i++) { ``` To: ```cpp for (int j = a; j <= b; j++) { int i = j; ``` by cosf @ 2023-11-09 23:39:22