#include <iostream> #include <math.h> #include <sstream> #ifdef _WIN32
  void cls(){
    HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
    COORD coord = {0, 0};
    DWORD count;
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    GetConsoleScreenBufferInfo(hStdOut, &csbi);
    FillConsoleOutputCharacter(hStdOut, ' ',
                               csbi.dwSize.X * csbi.dwSize.Y,
                               coord, &count);
    SetConsoleCursorPosition(hStdOut, coord);
  }
#else
  void cls(){
    cout << "\f";
  }
#endif


using namespace std;

template <class T> inline string toString (const T& t){
stringstream ss;
ss << t;
return ss.str();
}

void printBin(int dec){
int *bin;
bin = (int *)malloc(sizeof(int));
int d=0;
while(dec!=0){
bin[d] = dec%2;
dec = (int)dec/2;
d++;
};
for(int i=d-1;i>=0;i--){
cout<<bin[i];
}
bin = NULL;
cin.ignore(2);
}

void printDec(int bina){

char bin[32];
string temp = toString(bina);
char *tempc;
tempc = new char[temp.length() + 1];
int d=(temp.length());
for(int i = 0; i<d; i++){
strcpy(tempc, temp.substr(i,1).c_str());
bin[i] = *tempc;
}

int binToDec = 0;
int cnt = 0;
for(int i=d-1; i>=0; i--){
int b = (int)bin[i]-'0';
binToDec += (int)b*pow(2.0,(double)cnt);
cnt++;
}
cout<<binToDec<<endl;
cin.ignore(2);
}

int main(){
 bool stop = false;
 while(!stop){
 cls();
 int option = 5;
 cout<<"1:\tDec to Bin"<<endl;
 cout<<"2:\tBin to Dec"<<endl;
 cout<<"----------------"<<endl;
 cout<<"0:\texit\n"<<endl;
 cout<<"Option: ";
 cin>>option;
 switch(option){
 case 1:
 int dec;
 cout<<"\nDec to Bin: ";
 cin>>dec;
 printBin(dec);
 break;
 case 2:
 int bin;
 cout<<"\nBin to Dec: ";
 cin>>bin;
 printDec(bin);
 break;
 case 0:
 stop = true;
 break;
 default:
 break;
 }
   }
}