#include <stdio.h>
int main(){
int outcome;
char grades;
printf("결과 점수를 입력하세요(0-100) : ");
scanf("%d", &outcome);
if (outcome >= 90){
grades = 'A';
}
else if (outcome >= 80){
grades = 'B';
}
else if (outcome >= 70){
grades = 'C';
}
else if (outcome >= 60){
grades = 'D';
}
else{
grades = 'F';
}
printf("학점은 : %c \n", grades);
return 0;
}