PR6

#include <grxkeys.h>
#include <grx20.h>

main()
{
 GrSetMode(GR_default_graphics);
 for(float i = 0; i<5; i=i+0.1){
     GrLine(30+i,GrMaxY()-30,150+i,30, 4);
 }
 for(float i = 0; i<5; i=i+0.1){
     GrLine(155-i, 30,255-i,GrMaxY()-30, 4);
 }
 for(float i = 0; i<5; i=i+0.1){
     GrLine(90, 0.5*GrMaxY()+i,200,0.5*GrMaxY()+i, 6);
 }
 GrFilledCircle(280, GrMaxY()-34, 4, 14);
 for(float i = 0; i<5; i=i+0.1){
     GrLine(340+i, 30,340+i,GrMaxY()-30, 2);
 }
 for(float i = 0; i<5; i=i+0.1){
     GrLine(540+i, 30,540+i,GrMaxY()-30, 1);
 }
 for(float i = 0; i<5; i=i+0.1){
     GrLine(340, 0.5*GrMaxY()+i,540,0.5*GrMaxY()+i, 11);
 }
 GrFilledCircle(570, GrMaxY()-34, 4, 5);
 while(!GrKeyPressed()){}
}