From 55ad7c32f2d534b1fbd438204d21738f958c51a5 Mon Sep 17 00:00:00 2001 From: Dave Gauer Date: Tue, 9 Feb 2021 18:36:57 -0500 Subject: Moved exercises to exercises because exercises --- exercises/03_assignment.zig | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 exercises/03_assignment.zig (limited to 'exercises/03_assignment.zig') diff --git a/exercises/03_assignment.zig b/exercises/03_assignment.zig new file mode 100644 index 0000000..d26f2a2 --- /dev/null +++ b/exercises/03_assignment.zig @@ -0,0 +1,48 @@ +// +// It seems we got a little carried away making everything "const u8"! +// +// "const" values cannot change. +// "u" types are "unsigned" and cannot store negative values. +// "8" means the type is 8 bits in size. +// +// Example: foo cannot change (it is CONSTant) +// bar can change (it is VARiable): +// +// const foo: u8 = 20; +// var bar: u8 = 20; +// +// Example: foo cannot be negative and can hold 0 to 255 +// bar CAN be negative and can hold −128 to 127 +// +// const foo: u8 = 20; +// var bar: i8 = -20; +// +// Example: foo can hold 8 bits (0 to 255) +// bar can hold 16 bits (0 to 65,535) +// +// You can do just about any combination of these that you can think of: +// +// u32 can hold 0 to 4,294,967,295 +// i64 can hold −9,223,372,036,854,775,808 to 9,223,372,036,854,775,807 +// +// Please fix this program so that the types can hold the desired values +// and the errors go away! +// +const std = @import("std"); + +pub fn main() void { + const n: u8 = 50; + n = n + 5; + + const pi: u8 = 314159; + + const negative_eleven: u8 = -11; + + // There are no errors in the next line, just explanation: + // Perhaps you noticed before that the print function takes two + // parameters. Now it will make more sense: the first parameter + // is a string. The string may contain placeholders '{}', and the + // second parameter is an "anonymous list literal" (don't worry + // about this for now!) with the values to be printed. + std.debug.print("{} {} {}\n", .{n, pi, negative_eleven}); +} -- cgit v1.2.3-ZIG