写的很不清楚，麻烦大家了帮忙看看了
by songyikang @ 2021-08-03 17:52:49
```cpp
int begin=字符长度;
while(s[begin]==0) begin--;
for(int i=begin ; i>=1 ; i--) cout<<s[i];
```
去前导零
by yangyuanxi44 @ 2021-08-03 17:56:56