import std.stdio; import std.algorithm; import std.range; /* a multiline comment * */ int the_ultimate_answer() { return 42; } void main() { // function call with string literal writeln("Hello World!"); // an int array declaration int[] arr1 = [1, 2, 3]; // a double double d1 = 3.14; // another function call writefln("%s\n%s\n%s\n", arr1, d1, the_ultimate_answer()); }