#!/usr/bin/awk # # See ../README.md # # # Run as: awk -f ch-2.awk < input-file # { sum_of_squares = 0 for (i = 1; i <= length ($1); i ++) { # Sum of squares sum_of_squares += substr ($1, i, 1) * substr ($1, i, 1) } root = int (.5 + int (sqrt (sum_of_squares))) print (sum_of_squares == root * root ? 1 : 0) }