foo.cc: In function 'int main()':
foo.cc:9:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |         for(i=0;i<=s.size();i++)
      |                 ~^~~~~~~~~~
foo.cc:11:28: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   11 |                 if(s[i]>=65&&s[i]<=90||s[i]>=97&&s[i]<=122)
foo.cc:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |         for(i=0;i<=s.size();i++)
      |                 ~^~~~~~~~~~
foo.cc:26:28: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |                 if(s[i]>=65&&s[i]<=90||s[i]>=97&&s[i]<=122)
foo.cc:6:36: warning: unused variable 'bj' [-Wunused-variable]
    6 |         int a[10005],sum=0,j=1,max,bj,x=0,i;
      |                                    ^~

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