Accepted
foo.c: In function 'main':
foo.c:15:9: warning: 'c2' may be used uninitialized in this function [-Wmaybe-uninitialized]
15 | printf("%c",c2);
| ^~~~~~~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务
foo.c: In function 'main':
foo.c:15:9: warning: 'c2' may be used uninitialized in this function [-Wmaybe-uninitialized]
15 | printf("%c",c2);
| ^~~~~~~~~~~~~~~
[Hydro](https://hydro.ac)提供评测服务
