最近在学习计算机图形学，也从网上下载了一些试验程序，但是不知道怎么运行，我装有visual c++6.0，比如说直线DDA程序如下：#include <stdio.h>#include <math.h>#include <graphics.h> dda_line(xa,ya,xb,yb,c)int xa,ya,xb,yb,c;{ float delta_x,delta_y,x,y; int dx,dy,steps,k;dx=xb-xa;dy=yb-ya;if(abs(dx)>abs(dy)) steps=abs(dx); else steps=abs(dy);delta_x=(float)dx/(float)steps;delta_y=(float)dy/(float)steps;x=xa;y=ya;putpixel(x,y,c);for(k=1;k<steps;k++){ x+=delta_x; y+=delta_y; putpixel(x,y,c);}}main() { int gdriver=DETECT, gmode ; initgraph(&gdriver,&gmode,"d://tc"); cleardevice();dda_line(0,0,1000,1000,2); getchar(); closegraph(); }请问我该怎么运行才能看见效果呢？急求助！小弟不才，谢谢大家详细指点！！！
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