= 임다찬 = {{{~cpp #include using namespace std; int main(){ int jumsu; int grade[5]={0,}; char g='A'; do{ cin >> jumsu; if(jumsu == 999) continue; else if(jumsu > 100 || jumsu < 0) continue; switch(jumsu/10){ case 10: ++grade[0]; break; case 9: ++grade[0]; break; case 8: ++grade[1]; break; case 7: ++grade[2]; break; case 6: ++grade[3]; break; default: ++grade[4]; break; } }while(jumsu != 999); for(int i = 0; i < 4; i++){ cout << (char)(g+i)<< " : " <