~cpp
#include <iostream>
using namespace std;
int main()
{
int i ;
int num[5]={0} ;
do{
cout << "점수를 입력하시오 : " ;
cin >> i ;
cout << endl;
if ( i == 9999)
break; // 9999입력시 숫자 포함 방지
switch ( i / 10 )
{
case 9:
num[0]++;
break;
case 8:
num[1]++;
break;
case 7:
num[2]++;
break;
case 6:
num[3]++;
break;
case 10:
num[0]++;
break;
default:
num[4]++;
}
}
while( i != 9999);
cout << "A : " << num[0] << endl;
cout << "B : " << num[1] << endl;
cout << "C : " << num[2] << endl;
cout << "D : " << num[3] << endl;
cout << "F : " << num[4] << endl;
system("pause");
return 0;
}