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351:20170504用C設計的SavePGM()與SavePBM()影像存檔函數<br><table width=800 border=8><tr><td bgcolor=cyan><p>int savePGM(unsigned char *imgb,int width, int height,int maxgray,char *fname)<br />{<br />FILE *outfile;<br />outfile = fopen(fname, "wb");<br />fprintf(outfile,"P5 %d %d %d ",width,height,maxgray);<br />for (int y=0;y&lt;height;y++){<br />&nbsp;&nbsp;&nbsp; for (int x=0;x&lt;width;x++){<br />&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; fprintf(outfile,"%c ",*(imgb+width*y+x));<br />&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />&nbsp;&nbsp;&nbsp; fprintf(outfile,"\n");<br />&nbsp;&nbsp;&nbsp; }<br />fclose(outfile);<br /><br />}</p>
<p><br />int savePBM(char *img,int width, int height,char *fname)<br />{<br />FILE *outfile;<br />outfile = fopen(fname, "w");<br />fprintf(outfile,"P1\n%d %d\n",width,height);<br />for (int y=0;y&lt;height;y++){<br />&nbsp;&nbsp;&nbsp; for (int x=0;x&lt;width;x++){<br />&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; fprintf(outfile,"%d",*(img+y*width+x)-'0');<br />&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br />&nbsp;&nbsp;&nbsp; fprintf(outfile,"\n");<br />&nbsp;&nbsp;&nbsp; }<br />fclose(outfile);<br />}</p></table><br> select id,article_id,topic,text from lt_articles_text where article_id =351; ok.
update lt_articles set num_reads=num_reads +1 where id=351; ok.