运行 ID: 82646

Main.cc: In function ‘int main()’:
Main.cc:14:34: warning: unused variable ‘b’ [-Wunused-variable]
         if(t[y]==s[0]) const int b=y;
                                  ^
Main.cc:15:36: warning: unused variable ‘a’ [-Wunused-variable]
         if(t[y]==s[n-1]) const int a=y;
                                    ^
Main.cc:17:33: error: ‘a’ was not declared in this scope
     cout<<"max="<