程序不能运行!
#include <stdio.h>
#include <graphics.h>
#include <math.h>
void main()
{
int xa,ya,xb,yb,c;
float delta_x,delta_y,x,y;
int dx,dy,steps,k;
int driver=VGA,mode=VGAHI;
initgraph(&driver,&mode,"");
setbkcolor(WHITE);
dx=xb-xa;
dy=yb-ya;
if(fabs(dx)>fabs(dy)) steps=fabs(dx);
else steps=fabs(dy);
delta_x=(float)dx/(float)steps;
delta_y=(float)dy/(float)steps;
x=xa;
y=ya;
putpixel(x,y,1);
for(k=1;k<=steps;k++){
x+=delta_x;
y+=delta_y;
putpixel(x,y,1);
}
getch();
}