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Converting Hex to Binary Using In/Output Files

JohnBlaze (20)
Hi guys, I wrote a code a few days ago to prompt the user to enter "Hex" values and the program converts that "hex" value into a 8 digit binary number. I got they code to work successfully, but now I am trying to covert these "Hex" values from a input file (see below). I was only able to get the conversion to work for the first "hex" value though :(. Any tips or ideas on this?

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  #include<iostream>
#include<iomanip>
#include<fstream>

using namespace std;

int main()
{
ifstream inFile;
ofstream outFile;

char s[80];
int i,value,sum=0;

inFile.open("HexValuesSample.txt");
outFile.open("HVS.txt");

inFile >> s;
cout << endl << endl;




for(i=0;s[i]!=0;i++)
{
			switch(s[i])           
			{             
			case '0':             
			outFile << "0000";              
			value = 0;
			break;            
			case '1':              
			outFile << "0001";              
			value = 1;
			break;        
			case '2':
		    outFile << "0010";
		     value = 2;
		     break;
		    case '3':
		     outFile << "0011";
		     value = 3;
		     break;
		    case '4':
		     outFile << "0100";
		     value = 4;
		     break;
		    case '5':
		     outFile << "0101";
		     value = 5;
		     break;
		    case '6':
		     outFile << "0110";
		     value = 6;
		     break;
		    case '7':
		     outFile << "0111";
		     value = 7;
		     break;
		    case '8':
		     outFile << "1000";
		     value = 8;
		     break;
		    case '9':
		     outFile << "1001";
		     value = 9;
		     break;
		    case 'a':
		    case 'A':
		     outFile << "1010";
		     value = 10;
		     break;
		    case 'b':
		    case 'B':
		    outFile << "1011";
		     value = 11;
		     break;
		    case 'c':
		    case 'C':
		     outFile << "1100";
		     value = 12;
		     break;
		    case 'd':
		    case 'D':
		     outFile << "1101";
		     value = 13;
		     break;
		    case 'e':
		    case 'E':
		     outFile << "1110";
		     value = 14;
		     break;
		    case 'f':
		    case 'F':
		     outFile << "1111";
		     value = 15;
		     break;
		    default:
		     outFile << "Invalid Input";
		     break;
		  }	
sum=sum+value;
outFile << " " ;
}




return 0;

}


///////////////////////////////////////////////////////////////////////////////////////////

INPUT FILE:
00
00
08
00
40
40
02
02
00
88
C8
00
28
21
01
2A
08
00
00
14
15
01
00
00
20
20
20
09
01
00
////////////////////////////////////////////////////////////////////////////////

OUTPUT FILE:
0000 0000

cire (8284)
You might try reading in more than one token. Chances are it will involve another loop of some sort.
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