Add exercise 3, exercise num param for script

This commit is contained in:
Dave Gauer 2021-01-03 18:55:45 -05:00
parent d618414c9c
commit b3f74d9c30
3 changed files with 44 additions and 1 deletions

30
03_assignment.zig Normal file
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@ -0,0 +1,30 @@
//
// Oh dear! It seems we got a little carried away making const u8 values.
// * const means constant (cannot be changed)
// * u8 means unsigned (cannot be negative), 8-bit integer
//
// Hint 1: Use 'var' for values that can change.
// Hint 2: Use enough bits to hold the value you want:
// u8 255
// u16 65,535
// u32 4,294,967,295
// Hint 3: Use 'i' (e.g. 'i8', 'i16') for signed integers.
//
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 struct (data structure)
// with values to be printed in place of the placeholders.
std.debug.print("{} {} {}\n", .{n, pi, negative_eleven});
}

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@ -59,7 +59,7 @@ Planned exercises:
* [x] Hello world (main needs to be public) * [x] Hello world (main needs to be public)
* [x] Importing standard library * [x] Importing standard library
* [ ] Assignment * [x] Assignment
* [ ] Arrays * [ ] Arrays
* [ ] If * [ ] If
* [ ] While * [ ] While

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@ -1,5 +1,8 @@
#!/bin/bash #!/bin/bash
# ziglings takes one parameter: the exercise number to jump to
jump_to=${1:-0}
echo echo
echo " _ _ _ " echo " _ _ _ "
echo " ___(_) __ _| (_)_ __ __ _ ___ " echo " ___(_) __ _| (_)_ __ __ _ ___ "
@ -14,11 +17,20 @@ fmt_err=$( tput setaf 1 ) # red foreground
fmt_yay=$( tput setaf 2 ) # green foreground fmt_yay=$( tput setaf 2 ) # green foreground
fmt_off=$( tput sgr0 ) # reset colors/effects fmt_off=$( tput sgr0 ) # reset colors/effects
exercise_num=0
function check_it { function check_it {
source_file=$1 source_file=$1
correct_output=$2 correct_output=$2
hint=$3 hint=$3
# If the current exercise is less than the requested one, skip it
let exercise_num+=1
if [[ $exercise_num -lt $jump_to ]]
then
return
fi
# Compile/run the source and capture the result and exit value # Compile/run the source and capture the result and exit value
cmd="zig run $source_file" cmd="zig run $source_file"
echo "$ $cmd" echo "$ $cmd"
@ -55,6 +67,7 @@ function check_it {
check_it 01_hello.zig "Hello world" "Note the error: the source file has a hint for fixing 'main'." check_it 01_hello.zig "Hello world" "Note the error: the source file has a hint for fixing 'main'."
check_it 02_std.zig "Standard Library" check_it 02_std.zig "Standard Library"
check_it 03_assignment.zig "55 314159 -11"
echo echo
echo " __ __ _ " echo " __ __ _ "