/in/foo.cc: In function 'int main()':
/in/foo.cc:68:26: warning: unused variable 'flag' [-Wunused-variable]
                     bool flag=1;
                          ^~~~
/in/foo.cc:97:34: warning: array subscript has type 'char' [-Wchar-subscripts]
                         if(pri[ch]<pri[str[i]] || ch=='(') 
                                  ^
/in/foo.cc:97:46: warning: array subscript has type 'char' [-Wchar-subscripts]
                         if(pri[ch]<pri[str[i]] || ch=='(') 
                                              ^
/in/foo.cc:130:43: warning: format '%c' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
         if(j && k==11) printf("%c",j+'A'-1);
                                    ~~~~~~~^