这不是空格，是一个 ASCII 码为 0 的字符
by DioxygenDifluoride @ 2022-09-23 12:53:01
求大神解答☺(●'◡'●)
by evil_paramecium @ 2022-09-23 12:53:32
```
for(int i=strlen(n);i>=0;i--)
```
应该为·
```
for(int i=strlen(n)-1;i>=0;i--)
```
by DioxygenDifluoride @ 2022-09-23 12:53:33
哦
by evil_paramecium @ 2022-09-23 12:54:36
```n[strlen(n)]``` 是 '\0' 字符，ASCII 码为 0
by DioxygenDifluoride @ 2022-09-23 12:54:39
感谢您
by evil_paramecium @ 2022-09-23 12:55:07