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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. void load_image_data(char* f_name)
  5. {
  6. 	FILE*	fp;
  7. 	char	buf[640];
  8. 	errno_t	err;
  9. 	int	x_size, y_size;
  10. 	int	max_gray;
  11. 	int	ix, iy;
  12.  
  13. 	err = fopen_s(&fp, f_name, "rb");
  14. 	if (err) {
  15. 		fprintf(stderr, "fopen_s\n");
  16. 		return;
  17. 	}
  18.  
  19. 	// P5
  20. 	fgets(buf, sizeof buf, fp);
  21. 	if (buf[0] != 'P' || buf[1] != '5') {
  22. 		fprintf(stderr, "not P5\n");
  23. 		return;
  24. 	}
  25.  
  26. 	// x y
  27. 	x_size = y_size = 0;
  28. 	while (x_size == 0) {
  29. 		fgets(buf, sizeof buf, fp);
  30. 		if (buf[0] == '#') continue;
  31. 		sscanf_s(buf, "%d%d", &x_size, &y_size);
  32. 	}
  33.  
  34. 	// max
  35. 	max_gray = 0;
  36. 	while (max_gray == 0) {
  37. 		fgets(buf, sizeof buf, fp);
  38. 		if (buf[0] == '#') continue;
  39. 		sscanf_s(buf, "%d", &max_gray);
  40. 	}
  41.  
  42. 	printf("\n%s\n", f_name);
  43. 	printf("%d %d\n", x_size, y_size);
  44. 	printf("%d\n", max_gray);
  45.  
  46. 	for (iy = 0; iy < y_size; iy++) {
  47. 		for (ix = 0; ix < x_size; ix++) {
  48. 			printf("%02x", fgetc(fp));
  49. 		}
  50. 		printf("\n");
  51. 	}
  52.  
  53. 	fclose(fp);
  54. }
  55.  
  56. int main()
  57. {
  58. 	char	f_name[256];
  59. 	int	i;
  60.  
  61. 	for (i = 0; i < 10; i++) {
  62. 		sprintf_s(f_name, _countof(f_name), "std%d.pgm", i);
  63. 		load_image_data(f_name);
  64. 	}
  65. 	for (i = 0; i < 10; i++) {
  66. 		sprintf_s(f_name, _countof(f_name), "n%d.pgm", i);
  67. 		load_image_data(f_name);
  68. 	}
  69. 	load_image_data("number2.pgm");
  70. 	return 0;
  71. }
  72.  
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https://ideone.com/I68Nv
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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