How can I get the length of an array in awk?

Question

This command

echo \"hello world\" | awk \'{split($0, array, \" \")} END{print length(array) }\'

does not work for me and gives this error m

Answer 1

When you split an array, the number of elements is returned, so you can say:

echo "hello world" | awk '{n=split($0, array, " ")} END{print n }'
# ------------------------^^^--------------------------------^^

Output is:

2