Имитация работы микропроцессора

#include <iostream>
#include <iomanip>
#include <cstring>
#include <cmath>
 
using namespace std;
 
class CPU {
public:
  int ZF;
  short int* data;
  short int* regs;
  CPU();
  void menu();
  void add(short int*, short int*);
  void sub(short int*, short int*);
  void addval(short int*, short int);
  void neg(short int*, short int);
  void mov(short int*, short int*);
  void write(short int*, short int);
  int getBit(short int, int);
  void printBits(short int*);
};
 
void CPU::add(short int* a, short int* b) {
  cout << "ADD " << *a << " " << *b << "  => " << *a + *b << endl;
  *a += *b;
  *a == 0 ? ZF = 1 : ZF = 0;
}
 
void CPU::addval(short int* a, short int b) {
  *a += b;
  *a == 0 ? ZF = 1 : ZF = 0;
}
 
void CPU::sub(short int* a, short int* b) {
  cout << "SUB " << *a << " " << *b << "  => " << *a - *b << endl;
  *a -= *b;
  *a == 0 ? ZF = 1 : ZF = 0;
}
 
int CPU::getBit(short int a, int bit) {
    while(bit--) {
        a >>= 1;
    }
    return a &= 1;
}
 
void CPU::printBits(short int* a) {
  for (int i = 16; i > -1; i--) {
    cout << getBit(*a, i);
  }
}
 
void CPU::neg(short int* a, short int offs) {
  cout << "NEG " << *a << "("; printBits(a);
  cout << ") " << offs << "  =>";
  short int mask = pow(2, offs);
  *a ^= mask;
  cout << *a << "("; printBits(a); cout << ")" << endl;
}
 
void CPU::mov(short int* a, short int* value) {
  *a = *value;
}
 
void CPU::write(short int* a, short int value) {
  *a = value;
}
 
CPU::CPU() {
  ZF = 0;
  data = new short int[32];
  for (int i = 0; i < 32; i++) {
    data[i] = 0;
  }
  regs = new short int[8];
  for (int i = 0; i < 8; i++) {
    regs[i] = 0;
  }
}
 
void CPU::menu() {
  for (int i = 0; i < 16; i++) {
    cout << setw(2) << i  << " -"<< setw(4) << data[i] << "("; printBits(data + i); cout << "); ";
    cout << setw(2) << i + 16 << " -" << setw(4) << data[i + 16] << "("; printBits(data + i + 16); cout << ");\n";
  }
  cout << endl;
  for (int i = 0; i < 4; i ++) {
    cout << setw(2) << i  << " -" << setw(4) << regs[i] << "("; printBits(regs + i); cout << "); ";
    cout << setw(2) << i + 4 << " -" << setw(4) << regs[i + 4] << "("; printBits(regs + i + 4); cout << ");\n";
  }
  cout << endl << "FLAGS: ZF = " << ZF << ";\n\n";
 
  cout << "0 - ADD  <data_addr1, data_addr2> (write to data_addr1)" << endl;
  cout << "1 - SUB  <data_addr1, data_addr2> (write to data_addr1)" << endl;
  cout << "2 - NEG  <data_addr, offset> (invert bit)" << endl;
  cout << "3 - MOV2REG  <reg_addr, data_addr>" << endl;
  cout << "4 - MOV2DATA  <data_addr, reg_addr>" << endl;
  cout << "5 - WRITE  <data_addr, value>" << endl;
  cout << "6 - GET_BIT  <regs_addr, offset> (print bit)" << endl;
  cout << "7 - CYCFOR" << endl;
 
  char* command = new char [10];
  int a = 0, b = 0, n;
  cin >> command >> a >> b;
  if (!strcmp(command, "ADD")) {
    add(data + a, data + b);
  } else if (!strcmp(command, "SUB")) {
    sub(data + a,data + b);
  } else if (!strcmp(command, "NEG")) {
    neg(data + a, b);
  } else if (!strcmp(command, "MOV2REG")) {
    mov(regs + a, data + b);
  } else if (!strcmp(command, "MOV2DATA")) {
    mov(data + a, regs + b);
  } else if (!strcmp(command, "WRITE")) {
    write(data + a, b);
  } else if (!strcmp(command, "GET_BIT")) {
    cout << "GET_BIT: " << getBit(*(regs + a), b) << endl;
  } else if (!strcmp(command, "CYCFOR")) {
   //for_cycle
}
  }
  cout << "\n\n\n";
  menu();
}
 
int main() {
  CPU cpu;
  cpu.menu();
}