Thread: Help for data conversion error

Hi, I am learning to write some simple program.

My program below should convert integer 13 to character 'K' but there is nothing when I tried to write it to file.

Nothing in card_array[P_1st_card-1]

Why is it so?

Could anyone can help?

Thank you very much!

Code:

#include <iostream>
#include <fstream>
#include <ctime>
#include <cstdlib>
#include <cassert>


using namespace std;


int P_1st_card;
int B_1st_card;
int P_2nd_card;
int B_2nd_card;
int cardvalue;
int player_value;
int banker_value;


char char_P_1st_card;
char char_P_2nd_card;
char char_B_1st_card;
char char_B_2nd_card;
char char_cardvalue;
char card_array[13];


//const char card_array[]="A23456789TJQK";


char stringconversion(int);
int numericconversion(int);


int main()
{
    ofstream mygame("c:\\cpp\\testing\\game_baccarat101.rtf");
    srand(time(0));
    for(int i=1;i!=20;i++)
    {
        P_1st_card=1+rand()%13;
        B_1st_card=1+rand()%13;
        P_2nd_card=1+rand()%13;
        B_2nd_card=1+rand()%13;


        stringconversion(P_1st_card);
        stringconversion(B_1st_card);
        stringconversion(P_2nd_card);
        stringconversion(B_2nd_card);


        numericconversion(P_1st_card);
        numericconversion(B_1st_card);
        numericconversion(P_2nd_card);
        numericconversion(B_2nd_card);


        int player_value=(P_1st_card+P_2nd_card)%10;
        int banker_value=(B_1st_card+B_2nd_card)%10;


        mygame<<" P1 = "<<P_1st_card<<" Char = "<<card_array[P_1st_card-1];
        mygame<<" P2 = "<<P_2nd_card<<" Char = "<<card_array[P_2nd_card-1];
        mygame<<" Player = "<<player_value<<endl;
        mygame<<" B1 = "<<B_1st_card<<" Char = "<<card_array[B_1st_card-1];
        mygame<<" B2 = "<<B_2nd_card<<" Char = "<<card_array[B_2nd_card-1];
        mygame<<" Banker = "<<banker_value<<endl;
    }
    return 0;
mygame.close();
}


char stringconversion(int cardvalue)
{
  const char card_array[]="A23456789TJQK";
  assert (cardvalue>=1 && cardvalue<=13);
  return card_array[cardvalue-1];
}


  int numericconversion(int cardvalue)
  {
    if (cardvalue>=10)
        cardvalue=0;
    return cardvalue;
  }

So when you convert that card into a char, maybe you shouldn't just throw it away, maybe?

Code:

character_you_want_to_print_later = stringconversion(P_1st_card);

and then you print that character later.

Right now you're using the global card_array, which has no characters in it all and thus you are printing no characters.

Yes it work. Thank tabstop for your help.