gawk: uninit5.awk:75: warning: `length(array)' is a gawk extension
gawk: uninit5.awk:75: warning: length: untyped parameter argument will be forced to scalar
length:  0
gawk: uninit5.awk:77: warning: length: untyped parameter argument will be forced to scalar


gawk: uninit5.awk:97: warning: length: untyped parameter argument will be forced to scalar
length:  0