//   Cristiane Gomes Bim               MAT         a0014525
       //                Capitulo 12      Exercicio 01
       //  Prog para criar 256 comb de um byte e gravar em disco.

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>

struct byte     {
		int a:1;
		int b:1;
		int c:1;
		int d:1;
		int e:1;
		int f:1;
		int g:1;
		int h:1;
		};

union  Elemento {
		char ch;
		struct byte bit;
		}ascii;

void f(int n,char *p);

void main(void)
{
int c;
unsigned char area[12];
FILE *arq;

clrscr();

    if( (arq = fopen("a:\Cap12Ex1.dat","wt")) == NULL )
    {
     printf ( "ERRORRRRRR");
     exit(1);
    }


    printf("\n\n\tCriando Arquivo a:\Cap12Ex1.dat com as 256 combina‡oes...");
    printf("\n\n\tPressione uma tecla...\n\n");
    getch();


    for(c=0;c<256;c++)
    {
     f(c,area);
     area[10]= 0x0D;
     area[11]= 0x0A;
     fputs(area,arq);
     printf("%s %x %d\n",area,area[0],c);
    }
    fclose(arq);
}


void f(int n, char *p)
{
int i,j,aux[8];

   for (i = 0; i < 8; i++)
     aux[i] = 0;

     j = 0;
     while (n != 0)
      {
	aux[j] = (n % 2);
	n = (n / 2);
	j++;
      }
   ascii.bit.a=aux[0];
   ascii.bit.b=aux[1];
   ascii.bit.c=aux[2];
   ascii.bit.d=aux[3];
   ascii.bit.e=aux[4];
   ascii.bit.f=aux[5];
   ascii.bit.g=aux[6];
   ascii.bit.h=aux[7];

  for (i = 0; i < 10; i++)
   p[i] = ascii.ch;

} 

UUUUUUUUUU 55 85
VVVVVVVVVV 56 86
WWWWWWWWWW 57 87
XXXXXXXXXX 58 88
YYYYYYYYYY 59 89
ZZZZZZZZZZ 5a 90
[[[[[[[[[[ 5b 91
\\\\\\\\\\ 5c 92
]]]]]]]]]] 5d 93
^^^^^^^^^^ 5e 94
__________ 5f 95
`````````` 60 96
aaaaaaaaaa 61 97
bbbbbbbbbb 62 98
cccccccccc 63 99
dddddddddd 64 100
eeeeeeeeee 65 101
ffffffffff 66 102
gggggggggg 67 103
hhhhhhhhhh 68 104
iiiiiiiiii 69 105




2
Gravar em disco 256  combinações de um byte