A1027 Colors in Mars (20 分)

#include <iostream>
using namespace std; 
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

char redix[13] = {
  '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
  'A', 'B', 'C'
};


int main(int argc, char** argv) {
  
  int a, b, c;
  cin >> a >> b >> c;
  char z1[40], z2[40], z3[40];
  int a1 = 0, a2 = 0, a3 = 0;
  
  do{
    z1[a1++] = redix[a % 13];
    a /= 13;
  }while(a != 0);
  
  do{
    z2[a2++] = redix[b % 13];
    b /= 13;
  }while(b != 0);
  
  do{
    z3[a3++] = redix[c % 13];
    c /= 13;
  }while(c != 0);
  
  cout << "#";
  
  if(a1 == 1){
    cout << "0";
  }
  
  for(int i = a1-1; i >= 0; i--){
    cout << z1[i];
  }
  
//  cout << endl;
  
  if(a2 == 1){
    cout << "0";
  }
  
  for(int i = a2-1; i >= 0; i--){
    cout << z2[i];
  }
  //  cout << endl;
  if(a3 == 1){
    cout << "0";
  }
  
  for(int i = a3-1; i >= 0; i--){
    cout << z3[i];
  }
  //  cout << endl;
  return 0;
}