Programming

void ConvertHexToBinary(char sHexValue[])
{
  int i;
  printf("Binary Equivalent=");
  for(i=0;sHexValue[i]!=NULL;i++)
  {
    switch(sHexValue[i])
    {
    case '0':
      printf("0000");
      break;
    case '1':
      printf("0001");
      break;
    case '2':
      printf("0010");
      break;
    case '3':
      printf("0011");
      break;
    case '4':
      printf("0100");
      break;
    case '5':
      printf("0101");
      break;
    case '6':
      printf("0110");
      break;
    case '7':
      printf("0111");
      break;
    case '8':
      printf("1000");
      break;
    case '9':
      printf("1001");
      break;
    case 'a':
    case 'A':
      printf("1010");
      break;
    case 'b':
    case 'B':
      printf("1011");
      break;
    case 'c':
    case 'C':
      printf("1100");
      break;
    case 'd':
    case 'D':
      printf("1101");
      break;
    case 'e':
    case 'E':
      printf("1110");
      break;
    case 'f':
    case 'F':
      printf("1111");
      break;
    default:
      printf("\nEntered number is not Hexadecimal. Printed value is incorrect. ");
      break;
    }
  }
}
void main()
{
  char s[128]= cpSegment;
  printf("\n\n\nBinary equivalent of primary segment is: ");
  ConvertHexToBinary(s);
// Here i want to get binary in int or char like this
//char or int = ConvertHexToBinary(s);
}