Переделать код для 400-ичной системы счисления - C++ - Ответ 6897256

#include "stdafx.h"
#include "iostream"
#include "math.h"
#include "conio.h"
 
 
using namespace std;
 
class chisla
{
public:
int k;
char* st;
double s, s1;
void seta(char* st1)
{
this->st = st1;
k = strlen(st);
mass();
}
int vivod()
const
{
return s;
}
private:
 
void mass()
{
char* a = new char[k];
for (int i = 0; i <= k; i++)
{
a[i] = st[i];
}
double* b = new double[k];
for (int i = 0; i <= k; i++)
{
switch (a[i])
{
case '0': b[i] = 0;
break;
case '1': b[i] = 1;
break;
case '2': b[i] = 2;
break;
case '3': b[i] = 3;
break;
case '4': b[i] = 4;
break;
case '5': b[i] = 5;
break;
case '6': b[i] = 6;
break;
case '7': b[i] = 7;
break;
case '8': b[i] = 8;
break;
case '9': b[i] = 9;
break;
case 'a': b[i] = 10;
break;
case 'b': b[i] = 11;
break;
case 'c': b[i] = 12;
break;
case 'd': b[i] = 13;
break;
case 'e': b[i] = 14;
break;
case 'f': b[i] = 15;
break;
case 'g': b[i] = 16;
break;
case 'h': b[i] = 17;
break;
case 'i': b[i] = 18;
break;
case 'j': b[i] = 19;
break;
case 'k': b[i] = 20;
break;
case 'l': b[i] = 21;
break;
case 'm': b[i] = 22;
break;
case 'n': b[i] = 23;
break;
case 'o': b[i] = 24;
break;
case 'p': b[i] = 25;
break;
case 'r': b[i] = 26;
break;
case 's': b[i] = 27;
    break;
case 't': b[i] = 28;
    break;
case 'u': b[i] = 29;
    break;
case 'v': b[i] = 30;
    break;
case 'w': b[i] = 31;
    break;
case 'x': b[i] = 32;
    break;
case 'y': b[i] = 33;
    break;
case 'A': b[i] = 34;
    break;
case 'B': b[i] = 35;
    break;
case 'C': b[i] = 36;
    break;
case 'D': b[i] = 37;
    break;
case 'E': b[i] = 38;
    break;
case 'F': b[i] = 39;
    break;
case 'G': b[i] = 40;
    break;
case 'H': b[i] = 41;
    break;
case 'I': b[i] = 42;
    break;
case 'J': b[i] = 43;
    break;
case 'K': b[i] = 44;
    break;
case 'L': b[i] = 45;
    break;
case 'M': b[i] = 46;
    break;
case 'N': b[i] = 47;
    break;
case 'O': b[i] = 48;
    break;
case 'P': b[i] = 49;
    break;
case 'Q': b[i] = 50;
    break;
case 'R': b[i] = 51;
    break;
case 'S': b[i] = 52;
    break;
case 'T': b[i] = 53;
    break;
case 'U': b[i] = 54;
    break;
case 'V': b[i] = 55;
    break;
case 'W': b[i] = 56;
    break;
case 'X': b[i] = 57;
    break;
case 'Y': b[i] = 58;
    break;
case 'Z': b[i] = 59;
    break;
case '!': b[i] = 60;
    break;
case '@': b[i] = 61;
    break;
case '#': b[i] = 62;
    break;
case '$': b[i] = 63;
    break;
case '%': b[i] = 64;
    break;
case '^': b[i] = 65;
    break;
case '&': b[i] = 66;
    break;
case '*': b[i] = 67;
    break;
case '-': b[i] = 68;
    break;
case '_': b[i] = 69;
    break;
case '=': b[i] = 70;
    break;
case '+': b[i] = 71;
    break;
case '?': b[i] = 72;
    break;
case '.': b[i] = 73;
    break;
case '<': b[i] = 74;
    break;
case '>': b[i] = 75;
    break;
case '|': b[i] = 76;
    break;
case ',': b[i] = 77;
    break;
case ':': b[i] = 78;
    break;
case ';': b[i] = 79;
    break;
case '`': b[i] = 80;
    break;
case '': b[i] = 81;
 
}
 
}
double n = k - 1;
s = 0;
for (int i = 0; i<k; i++)
{
s = s + b[i] * pow(26, (n - i));
}
this->s1 = s;
}
};
 
int _tmain(int argc, _TCHAR* argv[])
{
setlocale(LC_ALL, "Russian");
char chislo[100];
chisla ch;
cout << "Введите число в 400ичной системе счисления ";
cin >> chislo;
ch.seta(chislo);
cout << ch.vivod();
_getch();
return 0;
}