用C语言实现的DDA算法

#include"Conio.h" #include"graphics.h"/*forinitgr()*/ #include"stdio.h"/*forNULL*/ #defineclosegrclosegraph voidinitgr(void)/*BGI初始化*/ { intgraphdriver=DETECT,graphmode; initgraph(&graphdriver,&graphmode,"bgi"); }