#!/usr/bin/rdmd // Computes average line length for standard input. import std.stdio; void main() { ulong lines = 0; double sumLength = 0; foreach (line; stdin.byLine()) { ++lines; sumLength += line.length; } writeln("Average line length: ", lines ? sumLength / lines : 0); } Standard input Lorem ipsum dolor sit amet, consectetur adipiscing elit. Mauris tristique rutrum sem, nec convallis enim bibe