procedure main()
local i, x
i := 0
x := repeat {
writes(i, " ")
i +:= 1
if i >= 10 then break 123
}
write()
write("x = ", image(x))
x := 111
i := 0
x := while i < 10 do {
writes(i, " ")
i +:= 1
if i >= 100 then break 99
}
write()
write("x = ", image(x))
end
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