[C++知识库]C++将成绩划分为五个等级

#include <iostream>
using namespace std;
int main()
{
?? ?int score,grade;
?? ?cout<<"输入一门课程的成绩:"<<endl;
?? ?/*cin>>score;
?? ?if (score>=90.0)
?? ? ? ?cout<<"A Grade";
?? ?else if (score>=80.0)
?? ? ? ?cout<<"B Grade";
?? ?else if (score>=70.0)
?? ??? ?cout<<"C Grade";
?? ?else if (score>=60.0)
?? ??? ?cout<<"D Grade";
?? ?else cout<<"Not Passed"<<endl;*/

?? ?cin>>score;
? ? grade=score/10;
?? ??? ?switch(grade)
?? ??? ?
?? ??? ?{
?? ??? ?case 9:; case 10:cout<<"A Grade";break;
?? ??? ?case 8:cout<<"B Grade";break;
?? ??? ?case 7:cout<<"C Grade";break;
?? ??? ?case 6:cout<<"D Grade";break;
defult:cout<<"Not Passed";}

}