#include <stdio.h>

#define X_SIZE	32
#define Y_SIZE	32

typedef unsigned char u_char;

void disp_img(int n);
void cut_img(void);
void load_image_data(char* f_name);

u_char	image[Y_SIZE][X_SIZE * 10];
u_char	img_a[10][Y_SIZE][X_SIZE];

int main()
{
	int	i;

	load_image_data("number2.pgm");
	cut_img();
	for (i = 0; i < 10; i++) {
		printf("\nimg_a[%d]\n", i);
		disp_img(i);
	}

	return 0;
}

void disp_img(int n)
{
	int	ix, iy;

	for (iy = 0; iy < Y_SIZE; iy++) {
		for (ix = 0; ix < X_SIZE; ix++) {
			printf("%02x", img_a[n][iy][ix]);
		}
		printf("\n");
	}
}

void cut_img(void)
{
	int	i, ix, iy;

	for (i = 0; i < 10; i++) {
		for (iy = 0; iy < Y_SIZE; iy++) {
			for (ix = 0; ix < X_SIZE; ix++) {
				img_a[i][iy][ix] = image[iy][X_SIZE * i + ix];
			}
		}
	}
}

void load_image_data(char* f_name)
{
	FILE*	fp;
	char	buf[640];
	errno_t	err;
	int	x_size, y_size;
	int	max_gray;
	int	ix, iy;

	err = fopen_s(&fp, f_name, "rb");
	if (err) {
		fprintf(stderr, "fopen_s\n");
		return;
	}

	// P5
	fgets(buf, sizeof buf, fp);
	if (buf[0] != 'P' || buf[1] != '5') {
		fprintf(stderr, "not P5\n");
		return;
	}

	// x y
	x_size = y_size = 0;
	while (x_size == 0) {
		fgets(buf, sizeof buf, fp);
		if (buf[0] == '#') continue;
		sscanf_s(buf, "%d%d", &x_size, &y_size);
	}

	// max
	max_gray = 0;
	while (max_gray == 0) {
		fgets(buf, sizeof buf, fp);
		if (buf[0] == '#') continue;
		sscanf_s(buf, "%d", &max_gray);
	}

	for (iy = 0; iy < y_size; iy++) {
		for (ix = 0; ix < x_size; ix++) {
			image[iy][ix] = fgetc(fp);
		}
	}

	fclose(fp);
}

/*
img_a[8]
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffff0000000000ffffffffffffffffffffffffffffffffffffffffff
ffffffffff00ffffffffff0000ffffffffffffffffffffffffffffffffffffff
ffffffff00ffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffff000000ffffffffffff00ffffffffffffffffffffffffffffffffffffff
ffffffff00000000ffffff00ffffffffffffffffffffffffffffffffffffffff
ffffffffff000000000000ffffffffffffffffffffffffffffffffffffffffff
ffffffffffff000000000000ffffffffffffffffffffffffffffffffffffffff
ffffffffff00ffffff00000000ffffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffffff000000ffffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffff
ffffff0000ffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffffff0000ffffffffff0000ffffffffffffffffffffffffffffffffffffff
ffffffffff000000000000ffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

img_a[9]
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffff0000000000ffffffffffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffff00ffffffffffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffff00ffffffffffffffffffffffffffffffffffffffff
ffff00ffffffffffffffffff00ffffffffffffffffffffffffffffffffffffff
ff0000ffffffffffffffffff00ffffffffffffffffffffffffffffffffffffff
ff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ff0000ffffffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffff0000ffffffffffffff000000ffffffffffffffffffffffffffffffffffff
ffffff0000ffffffffff00ff0000ffffffffffffffffffffffffffffffffffff
ffffffff000000000000ffff0000ffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffff0000ffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffff00ffffffffffffffffffffffffffffffffffffff
ffff000000ffffffffffff0000ffffffffffffffffffffffffffffffffffffff
ffff000000ffffffffffff00ffffffffffffffffffffffffffffffffffffffff
ffff0000ffffffffffff0000ffffffffffffffffffffffffffffffffffffffff
ffffff00ffffffffff0000ffffffffffffffffffffffffffffffffffffffffff
ffffffff0000000000ffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
*/