백준 2754번: 학점계산

using System;

class Program {
    static void Main(string[] args) {
        string stringScore = Console.ReadLine();
        float score = 0;
        switch (stringScore) {
            case "A+": score = 4.3f; break;
            case "A0": score = 4.0f; break;
            case "A-": score = 3.7f; break;
            case "B+": score = 3.3f; break;
            case "B0": score = 3.0f; break;
            case "B-": score = 2.7f; break;
            case "C+": score = 2.3f; break;
            case "C0": score = 2.0f; break;
            case "C-": score = 1.7f; break;
            case "D+": score = 1.3f; break;
            case "D0": score = 1.0f; break;
            case "D-": score = 0.7f; break;
            case "F": score = 0f; break;
            default:
                break;
        }

        string result = string.Format("{0:f1}", score);
        Console.WriteLine(result);
    }
}

문제 출처

https://www.acmicpc.net/problem/2754

2754번: 학점계산