二、八、十六进制转十进制

素颜马尾好姑娘i 2022-08-11 16:47 255阅读 0赞

    public string ToD(string Num, int n)
    \{
        char\[\] nums = Num.ToCharArray();
        int d = 0;
        for (int i = 0; i < nums.Length; i++)
        \{
            string number = nums\[i\].ToString();
            if (n == 16)
            \{
                switch (number.ToUpper())
                \{
                    case "A":
                        number = "10";
                        break;
                    case "B":
                        number = "11";
                        break;
                    case "C":
                        number = "12";
                        break;
                    case "D":
                        number = "13";
                        break;
                    case "E":
                        number = "14";
                        break;
                    case "F":
                        number = "15";
                        break;
                \}
            \}
            Double power = Math.Pow(Convert.ToDouble(n), Convert.ToDouble(nums.Length - (i + 1)));
            d += Convert.ToInt32(number) \* Convert.ToInt32(power); 
        \}
        return d.ToString();
    \}