139278

Run ID	作者	问题	语言	测评结果	Time	Memory	代码长度	提交时间
139278	向睿杰	09输出成绩等级	C++	Compile Error	0 MS	0 KB	344	2025-12-06 11:57:45

Tests(0/0):

Code:

#include<iostream> using namespace stdi; int main() { int score; cin>>score; if(score>='90'){ cout<<"A"<<endl; } else if('80'<=score<'90'){ cout<<"B"<<endl; } else if('70'<=score<'80'){ cout<<"C"<<endl; } else if(score>='60'){ cout<<"D"<<endl; } else{ cout<<"不及格"<<endl; } return 0; }

Run Info:

Main.cc:7:12: warning: multi-character character constant [-Wmultichar]
  if(score>='90'){
            ^
Main.cc:10:10: warning: multi-character character constant [-Wmultichar]
  else if('80'<=score<'90'){
          ^
Main.cc:10:22: warning: multi-character character constant [-Wmultichar]
  else if('80'<=score<'90'){
                      ^
Main.cc:13:10: warning: multi-character character constant [-Wmultichar]
  else if('70'<=score<'80'){
          ^
Main.cc:13:22: warning: multi-character character constant [-Wmultichar]
  else if('70'<=score<'80'){
                      ^
Main.cc:16:17: warning: multi-character character constant [-Wmultichar]
  else if(score>='60'){
                 ^
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:10:21: warning: comparison of constant '14640' with boolean expression is always true [-Wbool-compare]
  else if('80'<=score<'90'){
                     ^
Main.cc:10:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if('80'<=score<'90'){
              ^
Main.cc:11:6: error: 'cout' was not declared in this scope
      cout<<"B"<& __os)
     ^
Main.cc:13:21: warning: comparison of constant '14384' with boolean expression is always true [-Wbool-compare]
  else if('70'<=score<'80'){
                     ^
Main.cc:13:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
  else if('70'<=score<'80'){
              ^
Main.cc:14:6: error: 'cout' was not declared in this scope
      cout<<"C"<& __os)
     ^
Main.cc:17:6: error: 'cout' was not declared in this scope
      cout<<"D"<& __os)
     ^
Main.cc:20:3: error: 'cout' was not declared in this scope
   cout<<"不及格"<& __os)
     ^