帮助学习C语言 程序源代码： #include "graphics.h" #define LEFT 0 #define TOP 0 #define RIGHT 639 #define BOTTOM 479 #define LINES 400 #define MAXCOLOR 15 main() { int driver,mode,error; int x1,y1; int x2,y2; int dx1,dy1,dx2,dy2,i=1; int count=0; int color=0; dri
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