Run id: 139271

Main.cc:7:12: warning: multi-character character constant [-Wmultichar]
  if(score>='90'){
            ^
Main.cc:9:10: warning: multi-character character constant [-Wmultichar]
  else if('80'<=score<'90')
          ^
Main.cc:9:22: warning: multi-character character constant [-Wmultichar]
  else if('80'<=score<'90')
                      ^
Main.cc:11:10: warning: multi-character character constant [-Wmultichar]
  else if('60'<=score<'70')
          ^
Main.cc:11:22: warning: multi-character character constant [-Wmultichar]
  else if('60'<=score<'70')
                      ^
Main.cc:2:17: error: 'stdi' is not a namespace-name
 using namespace stdi;
                 ^
Main.cc:2:21: error: expected namespace-name before ';' token
 using namespace stdi;
                     ^
Main.cc: In function 'int main()':
Main.cc:6:2: error: 'cin' was not declared in this scope
  cin>>score;
  ^
Main.cc:6:2: note: suggested alternative:
In file included from Main.cc:1:0:
/usr/include/c++/5/iostream:60:18: note:   'std::cin'
   extern istream cin;  /// Linked to standard input
                  ^
Main.cc:8:3: error: 'cout' was not declared in this scope
   cout<<"A"<& __os)
     ^
Main.cc:9:2: error: expected '}' before 'else'
  else if('80'<=score<'90')
  ^
Main.cc:9:21: warning: comparison of constant '14640' with boolean expression is always true [-Wbool-compare]
  else if('80'<=score<'90')
                     ^
Main.cc:9:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if('80'<=score<'90')
              ^
Main.cc:10:6: error: 'cout' was not declared in this scope
      cout<<"B"<& __os)
     ^
Main.cc:11:21: warning: comparison of constant '14128' with boolean expression is always true [-Wbool-compare]
  else if('60'<=score<'70')
                     ^
Main.cc:11:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if('60'<=score<'70')
              ^
Main.cc:12:6: error: 'cout' was not declared in this scope
      cout<<"C"<& __os)
     ^
Main.cc:14:6: error: 'cout' was not declared in this scope
      cout<<"D"<& __os)
     ^
Main.cc: At global scope:
Main.cc:16:2: error: expected unqualified-id before 'return'
  return 0;
  ^
Main.cc:17:1: error: expected declaration before '}' token
 }
 ^