Flag of Italy
The Wikipedia page for Flag of Italy has the details about the colors of the flag. This little program tries to make the flag with the right colors. However, the proportations are not maintained.
The flag of Netherlands is as equally simple. Would you like to give it a try?
Code
#include <sketch.h>
int main()
{
// Colors of Flag of Italy as mentioned on the wikipedia page
// https://en.wikipedia.org/wiki/Flag_of_Italy#Chromatic_definition
char *green = "#008C45"; // golf Green
char *white = "#F4F5F0"; // Cloud Dancer
char *red = "#CD212A"; // Tomato
set_stroke("none");
set_fill(green);
draw_rectangle(-200, 0, 200, 600);
set_fill(white);
draw_rectangle(0, 0, 200, 600);
set_fill(red);
draw_rectangle(200, 0, 200, 600);
save_sketch("flag-of-italy.svg");
}