#include <iostream>
#include <stdlib.h>
using namespace std;
int main(){
system("cls");
char diem;
cout << "Moi ban nhap vao diem: ";
cin >> diem;
if (diem == 'A')
{
cout << "Diem xuat sac" << endl;
}else if(diem == 'B') {
cout << "Diem kha" << endl;
}else if(diem == 'C'){
cout << "Diem trung binh" << endl;
}else if(diem == 'D'){
cout << "Diem yeu" << endl;
}else{
cout << "Du lieu khong hop le" << endl;
}
}
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