for loop

---

examples/other/for.R

for (i in 1:3) {
    cat(i, end="\n")
}

start = 30
end = 32
for (i in start:end) {
    cat(i, end="\n")
}

animals = c("bear", "rabbit", "dog")
for (animal in animals) {
    cat(animal, end="\n")
}