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#include <stdio.h>
#define X_SIZE 40 /* size of array in the X direction */
#define Y_SIZE 60 /* size of the array in Y direction */
/*
* We use X_SIZE/8 since we pack 8 bits per byte
*/
char graphics[X_SIZE / 8][Y_SIZE]; /* the graphics data */
#define SET_BIT(x,y) graphics[(x)/8][y] |= (0x80 >>((x)%8))
main()
{
int loc; /* current location we are setting */
void print_graphics(void); /* print the data */
for (loc = 0; loc < X_SIZE; loc++)
SET_BIT(loc, loc);
print_graphics();
return (0);
}
/********************************************************
* print_graphics -- print the graphics bit array *
* as a set of X and .'s. *
********************************************************/
void print_graphics(void)
{
int x; /* current x BYTE */
int y; /* current y location */
int bit; /* bit we are testing in the current byte */
for (y = 0; y < Y_SIZE; y++) {
/* Loop for each byte in the array */
for (x = 0; x < X_SIZE / 8; x++) {
/* Handle each bit */
for (bit = 0x80; bit > 0; bit = (bit >> 1)) {
if ((graphics[x][y] & bit) != 0)
(void) printf("X");
else
(void) printf(".");
}
}
(void) printf("\n");
}
}
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