Apply `zig fmt` to exercises

exercises/01_hello.zig

@@ -19,4 +19,3 @@ const std = @import("std");
 fn main() void {
     std.debug.print("Hello world!\n", .{});
 }
-

exercises/04_arrays.zig

@@ -46,6 +46,7 @@ pub fn main() void {
     // Use the len property to get the length of the array:
     const length = some_primes.???;
 
-    std.debug.print("First: {}, Fourth: {}, Length: {}\n",
+    std.debug.print("First: {}, Fourth: {}, Length: {}\n", .{
-        .{first, fourth, length});
+        first, fourth, length,
+    });
 }

exercises/06_strings.zig

@@ -34,7 +34,6 @@ pub fn main() void {
 
     // That's all the problems. Let's see our results:
     std.debug.print("d={u} {s}{s}\n", .{ d, laugh, major_tom });
-    //
     // Keen eyes will notice that we've put 'u' and 's' inside the '{}'
     // placeholders in the format string above. This tells the
     // print() function to format the values as a UTF-8 character and

exercises/10_if2.zig

@@ -14,4 +14,3 @@ pub fn main() void {
 
     std.debug.print("With the discount, the price is ${}.\n", .{price});
 }
-

exercises/15_for.zig

@@ -23,6 +23,5 @@ pub fn main() void {
 
     std.debug.print("The End.\n", .{});
 }
-//
 // Note that "for" loops also work on things called "slices"
 // which we'll see later.

exercises/18_functions.zig

@@ -23,7 +23,6 @@ pub fn main() void {
     std.debug.print("Answer to the Ultimate Question: {}\n", .{answer});
 }
 
-//
 // Please define the deepThought() function below.
 //
 // We're just missing a couple things. One thing we're NOT missing is the

exercises/19_functions2.zig

@@ -18,7 +18,6 @@ pub fn main() void {
     });
 }
 
-//
 // Please give this function the correct input parameter(s).
 // You'll need to figure out the parameter name and type that we're
 // expecting. The output type has already been specified for you.

exercises/20_quiz3.zig

@@ -14,7 +14,6 @@ pub fn main() void {
     std.debug.print("\n", .{});
 }
 
-//
 // You won't see this every day: a function that takes an array with
 // exactly four u16 numbers. This is not how you would normally pass
 // an array to a function. We'll learn about slices and pointers in
@@ -28,7 +27,6 @@ fn printPowersOfTwo(numbers: [4]u16) ??? {
     }
 }
 
-//
 // This function bears a striking resemblance to twoToThe() in the last
 // exercise. But don't be fooled! This one does the math without the aid
 // of the standard library!

exercises/22_errors2.zig

@@ -27,4 +27,3 @@ pub fn main() void {
 
     std.debug.print("I compiled!", .{});
 }
-

exercises/24_errors4.zig

@@ -37,7 +37,9 @@ pub fn main() void {
 //     detectProblems()  Returns the number or an error.
 //
 fn makeJustRight(n: u32) MyNumberError!u32 {
-    return fixTooBig(n) catch |err| { return err; };
+    return fixTooBig(n) catch |err| {
+        return err;
+    };
 }
 
 fn fixTooBig(n: u32) MyNumberError!u32 {
@@ -65,4 +67,3 @@ fn detectProblems(n: u32) MyNumberError!u32 {
     if (n > 20) return MyNumberError.TooBig;
     return n;
 }
-

exercises/25_errors5.zig

@@ -23,7 +23,6 @@ pub fn main() void {
 }
 
 fn addFive(n: u32) MyNumberError!u32 {
-    //
     // This function needs to return any error which might come back from detect().
     // Please use a "try" statement rather than a "catch".
     //
@@ -37,4 +36,3 @@ fn detect(n: u32) MyNumberError!u32 {
     if (n > 20) return MyNumberError.TooBig;
     return n;
 }
-

exercises/28_defer2.zig

@@ -9,7 +9,6 @@ pub fn main() void {
 
     for (animals) |a| printAnimal(a);
 
-    
     std.debug.print("done.\n", .{});
 }
 
@@ -21,9 +20,18 @@ fn printAnimal(animal: u8) void {
 
     std.debug.print(") ", .{}); // <---- how!?
 
-    if (animal == 'g'){ std.debug.print("Goat", .{}); return; }
+    if (animal == 'g') {
-    if (animal == 'c'){ std.debug.print("Cat", .{}); return; }
+        std.debug.print("Goat", .{});
-    if (animal == 'd'){ std.debug.print("Dog", .{}); return; }
+        return;
+    }
+    if (animal == 'c') {
+        std.debug.print("Cat", .{});
+        return;
+    }
+    if (animal == 'd') {
+        std.debug.print("Dog", .{});
+        return;
+    }
 
     std.debug.print("Unknown", .{});
 }

exercises/29_errdefer.zig

@@ -15,7 +15,6 @@
 //
 const std = @import("std");
 
-//
 var counter: u32 = 0;
 
 const MyErr = error{ GetFail, IncFail };

exercises/32_unreachable.zig

@@ -26,9 +26,15 @@ pub fn main() void {
 
     for (operations) |op| {
         switch (op) {
-            1  => { current_value += 1; },
+            1 => {
-            2  => { current_value -= 1; },
+                current_value += 1;
-            3  => { current_value *= current_value; },
+            },
+            2 => {
+                current_value -= 1;
+            },
+            3 => {
+                current_value *= current_value;
+            },
         }
 
         std.debug.print("{} ", .{current_value});

exercises/35_enums.zig

@@ -29,16 +29,22 @@ pub fn main() void {
         Ops.inc,
         Ops.pow,
         Ops.dec,
-        Ops.dec
+        Ops.dec,
     };
 
     var current_value: u32 = 0;
 
     for (operations) |op| {
         switch (op) {
-            Ops.inc  => { current_value += 1; },
+            Ops.inc => {
-            Ops.dec  => { current_value -= 1; },
+                current_value += 1;
-            Ops.pow  => { current_value *= current_value; },
+            },
+            Ops.dec => {
+                current_value -= 1;
+            },
+            Ops.pow => {
+                current_value *= current_value;
+            },
             // No "else" needed! Why is that?
         }
 

exercises/37_structs.zig

@@ -54,6 +54,6 @@ pub fn main() void {
 
     std.debug.print("Your wizard has {} health and {} gold.", .{
         glorp_the_wise.health,
-        glorp_the_wise.gold
+        glorp_the_wise.gold,
     });
 }

exercises/38_structs2.zig

@@ -45,7 +45,8 @@ pub fn main() void {
 
     // Printing all RPG characters in a loop:
     for (chars) |c, num| {
-        std.debug.print("Character {} - G:{} H:{} XP:{}\n",
+        std.debug.print("Character {} - G:{} H:{} XP:{}\n", .{
-                        .{num+1, c.gold, c.health, c.experience});
+            num + 1, c.gold, c.health, c.experience,
+        });
     }
 }

exercises/42_pointers4.zig

@@ -12,7 +12,6 @@ pub fn main() void {
     makeFive(&num);
     std.debug.print("num: {}, ", .{num});
 
-
     // Now something interesting. Let's pass a reference to a
     // specific array value:
     makeFive(&more_nums[2]);

exercises/43_pointers5.zig

@@ -44,7 +44,7 @@ const Class = enum{
 const Character = struct {
     class: Class,
     gold: u32,
-    health: u8 = 100, // <--- You can also fields a default value!
+    health: u8 = 100, // <--- You can also provide fields a default value!
     experience: u32,
 };
 
@@ -60,7 +60,6 @@ pub fn main() void {
     printCharacter(???);
 }
 
-
 // Note how this function's "c" parameter is a pointer to a Character struct.
 fn printCharacter(c: *Character) void {
 

exercises/45_optionals.zig

@@ -39,7 +39,6 @@ fn deepThought() ?u8 {
     // But we'll leave this as-is. Sorry Deep Thought.
     return null;
 }
-//
 // Blast from the past:
 //
 // Optionals are a lot like error union types which can either