diff --git a/exercises/080_anonymous_structs.zig b/exercises/080_anonymous_structs.zig
index 55dedd4..615267a 100644
--- a/exercises/080_anonymous_structs.zig
+++ b/exercises/080_anonymous_structs.zig
@@ -48,13 +48,13 @@ pub fn main() void {
     // * circle1 should hold i32 integers
     // * circle2 should hold f32 floats
     //
-    const circle1 = ??? {
+    const circle1 = Circle(i32){
         .center_x = 25,
         .center_y = 70,
         .radius = 15,
     };
 
-    const circle2 = ??? {
+    const circle2 = Circle(f32){
         .center_x = 25.234,
         .center_y = 70.999,
         .radius = 15.714,
diff --git a/exercises/081_anonymous_structs2.zig b/exercises/081_anonymous_structs2.zig
index df78713..0b84438 100644
--- a/exercises/081_anonymous_structs2.zig
+++ b/exercises/081_anonymous_structs2.zig
@@ -38,7 +38,7 @@ pub fn main() void {
 
 // Please complete this function which prints an anonymous struct
 // representing a circle.
-fn printCircle(???) void {
+fn printCircle(circle: anytype) void {
     print("x:{} y:{} radius:{}\n", .{
         circle.center_x,
         circle.center_y,
diff --git a/exercises/082_anonymous_structs3.zig b/exercises/082_anonymous_structs3.zig
index 6760ff3..ed6ab7c 100644
--- a/exercises/082_anonymous_structs3.zig
+++ b/exercises/082_anonymous_structs3.zig
@@ -82,14 +82,14 @@ fn printTuple(tuple: anytype) void {
     //         @typeInfo(Circle).Struct.fields
     //
     // This will be an array of StructFields.
-    const fields = ???;
+    const fields = @typeInfo(@TypeOf(tuple)).Struct.fields;
 
     // 2. Loop through each field. This must be done at compile
     // time.
     //
     //     Hint: remember 'inline' loops?
     //
-    for (fields) |field| {
+    inline for (fields) |field| {
         // 3. Print the field's name, type, and value.
         //
         //     Each 'field' in this loop is one of these:
@@ -117,9 +117,9 @@ fn printTuple(tuple: anytype) void {
         //
         // The first field should print as: "0"(bool):true
         print("\"{s}\"({any}):{any} ", .{
-            field.???,
-            field.???,
-            ???,
+            field.name,
+            field.type,
+            @field(tuple, field.name),
         });
     }
 }
diff --git a/exercises/083_anonymous_lists.zig b/exercises/083_anonymous_lists.zig
index daaeaff..82d008a 100644
--- a/exercises/083_anonymous_lists.zig
+++ b/exercises/083_anonymous_lists.zig
@@ -20,6 +20,6 @@ pub fn main() void {
     //
     //     = .{ 'h', 'e', 'l', 'l', 'o' };
     //
-    const hello = .{ 'h', 'e', 'l', 'l', 'o' };
+    const hello: [5]u8 = .{ 'h', 'e', 'l', 'l', 'o' };
     print("I say {s}!\n", .{hello});
 }