Runtime Error
foo.cc: In function 'int main()': foo.cc:31:7: warning: unused variable 's' [-Wunused-variable] char s[100],ch; ^ foo.cc:31:14: warning: unused variable 'ch' [-Wunused-variable] char s[100],ch; ^~
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foo.cc: In function 'int main()': foo.cc:31:7: warning: unused variable 's' [-Wunused-variable] char s[100],ch; ^ foo.cc:31:14: warning: unused variable 'ch' [-Wunused-variable] char s[100],ch; ^~
[Hydro](https://hydro.ac)提供评测服务