Added Ex. 5, array ops

This commit is contained in:
Dave Gauer 2021-01-04 18:40:34 -05:00
parent 87541c0c8b
commit faa49abb06
2 changed files with 41 additions and 0 deletions

40
05_arrays2.zig Normal file
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@ -0,0 +1,40 @@
//
// Zig has some fun array operators.
//
// You can use '++' to concatenate two arrays:
// const a = [_]u8{ 1,2 };
// const b = [_]u8{ 3,4 };
// const c = a ++ b ++ [_]u8{ 5 }; // 1,2,3,4,5
//
// You can use '**' to repeat an array:
// const d = [_]u8{ 1,2,3 } ** 2; // 1,2,3,1,2,3
//
const std = @import("std");
pub fn main() void {
const le = [_]u8{ 1, 3 };
const et = [_]u8{ 3, 7 };
// I want this to contain digits: 1 3 3 7
const leet = ???;
// I want this to contain digits: 1 0 0 1 1 0 0 1 1 0 0 1
const bit_pattern = [_]u8{ ??? } ** 3;
// We could print these arrays with leet[0], leet[1],...but let's
// have a little preview of Zig 'for' loops instead!
std.debug.print("LEET: ", .{});
for (leet) |*n| {
std.debug.print("{}", .{n.*});
}
std.debug.print(", Bits: ", .{});
for (bit_pattern) |*n| {
std.debug.print("{}", .{n.*});
}
std.debug.print("\n", .{});
}

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@ -69,6 +69,7 @@ check_it 01_hello.zig "Hello world" "Note the error: the source file has a hint
check_it 02_std.zig "Standard Library" check_it 02_std.zig "Standard Library"
check_it 03_assignment.zig "55 314159 -11" "There are three mistakes in this one!" check_it 03_assignment.zig "55 314159 -11" "There are three mistakes in this one!"
check_it 04_arrays.zig "Fourth: 7, Length: 8" "There are two things to complete here." check_it 04_arrays.zig "Fourth: 7, Length: 8" "There are two things to complete here."
check_it 05_arrays2.zig "LEET: 1337, Bits: 100110011001" "Fill in the two arrays."
echo echo
echo " __ __ _ " echo " __ __ _ "