(C++) - 백준(BOJ) 2754 : 학점계산 답

#include <iostream>
using namespace std;
int main() {
    char w[3];
    float c = 0;
    cin >> w;
    for (int i = 0; i < 2; i++)
    {
        switch (w[i])
        {
        case 'A':
            c = 4.3;
            break;
        case 'B':
            c = 3.3;
            break;
        case 'C':
            c = 2.3;
            break;
        case 'D':
            c = 1.3;
            break;
        case 'F':
            c = 0.0;
            break;
        case '0':
            c -= 0.3;
            break;
        case '-':
            c -= 0.6;
            break;
        }
    }
    printf("%.1f", c);
}