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/25_errors5.zig | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 exercises/25_errors5.zig (limited to 'exercises/25_errors5.zig') diff --git a/exercises/25_errors5.zig b/exercises/25_errors5.zig new file mode 100644 index 0000000..d9e9ce1 --- /dev/null +++ b/exercises/25_errors5.zig @@ -0,0 +1,40 @@ +// +// Zig has a handy "try" shortcut for this common error handling pattern: +// +// canFail() catch |err| return err; +// +// which can be more compactly written as: +// +// try canFail(); +// +const std = @import("std"); + +const MyNumberError = error{ + TooSmall, + TooBig, +}; + +pub fn main() void { + var a: u32 = addFive(44) catch 0; + var b: u32 = addFive(14) catch 0; + var c: u32 = addFive(4) catch 0; + + std.debug.print("a={}, b={}, c={}", .{a,b,c}); +} + +fn addFive(n: u32) MyNumberError!u32 { + // + // This function needs to return any error which might come back from fix(). + // Please use a "try" statement rather than a "catch". + // + var x = detect(n); + + return x + 5; +} + +fn detect(n: u32) MyNumberError!u32 { + if (n < 10) return MyNumberError.TooSmall; + if (n > 20) return MyNumberError.TooBig; + return n; +} + -- cgit v1.2.3-ZIG