新建 文本文档.txt

画直线

#include"stdio.h"
#include"stdlib.h"
#include"graphics.h"
#include"math.h"
void myinitgraph()
{  int  GraphDriver;
   int  GraphMode;
   int  ErrorCode;
   GraphDriver=DETECT;
   initgraph(&GraphDriver,&GraphMode,"");
   ErrorCode=graphresult();
   if(ErrorCode!=grOk)
      {printf("Graphics System Init Error:%s",grapherrormsg(ErrorCode));
       exit(1);}
 }
M(x0,y0,x1,y1,color)
int x0,y0,x1,y1,color;
{int x;
float dx,dy,k,y;
dx=x1-x0;
dy=y1-y0;
k=dy/dx;
y=y0;
for(x=x0;x<=x1;x++)
{putpixel(x,int(y+0.5),color);
y=y+k;}
}
 main()
  { int x0,x1,y0;y1,color;

    printf("shu zuo biao x0,y0,x1,y1,color:\n");
    scanf("%d,%d,%d,%d,%d",&x0,&y0,&x1,&y1,&color);
    myinitgraph();
    M(x0,y0,x1,y1,color);
}