Initial data commit

Task/Bitmap-Write-a-PPM-file/C/bitmap-write-a-ppm-file-1.c

@@ -0,0 +1,23 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(void)
+{
+  const int dimx = 800, dimy = 800;
+  int i, j;
+  FILE *fp = fopen("first.ppm", "wb"); /* b - binary mode */
+  (void) fprintf(fp, "P6\n%d %d\n255\n", dimx, dimy);
+  for (j = 0; j < dimy; ++j)
+  {
+    for (i = 0; i < dimx; ++i)
+    {
+      static unsigned char color[3];
+      color[0] = i % 256;  /* red */
+      color[1] = j % 256;  /* green */
+      color[2] = (i * j) % 256;  /* blue */
+      (void) fwrite(color, 1, 3, fp);
+    }
+  }
+  (void) fclose(fp);
+  return EXIT_SUCCESS;
+}

Task/Bitmap-Write-a-PPM-file/C/bitmap-write-a-ppm-file-2.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+
+int main()
+{
+  const char *filename = "n.pgm";
+  int x, y;
+  /* size of the image */
+  const int x_max = 100;  /* width */
+  const int y_max = 100;  /* height */
+  /* 2D array for colors (shades of gray) */
+  unsigned char data[y_max][x_max];
+  /* color component is coded from 0 to 255 ;  it is 8 bit color file */
+  const int MaxColorComponentValue = 255;
+  FILE * fp;
+  /* comment should start with # */
+  const char *comment = "# this is my new binary pgm file";
+
+  /* fill the data array */
+  for (y = 0; y < y_max; ++y) {
+    for (x = 0; x < x_max; ++x) {
+      data[y][x] = (x + y) & 255;
+    }
+  }
+
+  /* write the whole data array to ppm file in one step */
+  /* create new file, give it a name and open it in binary mode */
+  fp = fopen(filename, "wb");
+  /* write header to the file */
+  fprintf(fp, "P5\n %s\n %d\n %d\n %d\n", comment, x_max, y_max,
+          MaxColorComponentValue);
+  /* write image data bytes to the file */
+  fwrite(data, sizeof(data), 1, fp);
+  fclose(fp);
+  printf("OK - file %s saved\n", filename);
+  return 0;
+}

Task/Bitmap-Write-a-PPM-file/C/bitmap-write-a-ppm-file-3.c

@@ -0,0 +1 @@
+void output_ppm(FILE *fd, image img);

Task/Bitmap-Write-a-PPM-file/C/bitmap-write-a-ppm-file-4.c

@@ -0,0 +1,10 @@
+#include "imglib.h"
+
+void output_ppm(FILE *fd, image img)
+{
+  unsigned int n;
+  (void) fprintf(fd, "P6\n%d %d\n255\n", img->width, img->height);
+  n = img->width * img->height;
+  (void) fwrite(img->buf, sizeof(pixel), n, fd);
+  (void) fflush(fd);
+}