[백준] C# : 학점계산 (2754번) ★

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Baekjoon
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, string> Dic = new Dictionary<string, string>
            {
                { "A+","4.3" },
                { "A0", "4.0" },
                { "A-", "3.7" },
                { "B+","3.3" },
                { "B0", "3.0" },
                { "B-", "2.7" },
                { "C+","2.3" },
                { "C0", "2.0" },
                { "C-", "1.7" },
                { "D+","1.3" },
                { "D0", "1.0" },
                { "D-", "0.7" },
                { "F", "0.0" }
            };
            string score = Console.ReadLine();
            Console.WriteLine(Dic[score]);
        }
    }
}

// 다른 코드

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Baekjoon
{
    class Program
    {
        static void Main(string[] args)
        {
            string grade = Console.ReadLine();
            float score = 'E' - grade[0];

            if (grade[0] == 'F') score = 0f;
            else if (grade[1] == '+') score += 0.3f;
            else if (grade[1] == '-') score -= 0.3f;

            Console.WriteLine($"{score:0.0}");
        }
    }
}

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