diff --git a/src/main.rs b/src/main.rs
index e7a11a9..32dcc56 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,78 @@
-fn main() {
-    println!("Hello, world!");
+pub trait Stat {
+    fn score(&self) -> u8;
+
+    fn modifier(&self) -> i8 {
+        return (self.score() as i8 / 2) - 5;
+    }
+
+    fn skill(&self, proficiency: u8, proficient : bool, expert : bool) -> i8 {
+        let modifier : i8 = self.modifier();
+        let proficiency_boost : u8 = proficiency * proficient as u8;
+        let expertise_boost : u8 = proficiency * expert as u8;
+        return modifier + (proficiency_boost as i8) + (expertise_boost as i8);
+    }
+}
+
+pub trait StatSet {
+    fn strength(&self) -> impl Stat;
+    fn dexterity(&self) -> impl Stat;
+    fn constitution(&self) -> impl Stat;
+    fn intelligence(&self) -> impl Stat;
+    fn wisdom(&self) -> impl Stat;
+    fn charisma(&self) -> impl Stat;
+}
+
+impl Stat for u8 {
+    fn score(&self) -> u8 {
+        return *self;
+    }
+}
+
+struct Player {
+    strength_score: u8,
+    dexterity_score: u8,
+    constitution_score: u8,
+    intelligence_score: u8,
+    wisdom_score: u8,
+    charisma_score: u8
+}
+
+impl StatSet for Player {
+    fn strength(&self) -> impl Stat {
+        return self.strength_score;
+    }
+    fn dexterity(&self) -> impl Stat {
+        return self.dexterity_score;
+    }
+    fn constitution(&self) -> impl Stat {
+        return self.constitution_score;
+    }
+    fn intelligence(&self) -> impl Stat {
+        return self.intelligence_score;
+    }
+    fn wisdom(&self) -> impl Stat {
+        return self.wisdom_score;
+    }
+    fn charisma(&self) -> impl Stat {
+        return self.charisma_score;
+    }
+}
+
+
+fn main() {
+    let demo : Player = Player {
+        strength_score: 12,
+        dexterity_score: 20,
+        constitution_score: 15,
+        intelligence_score: 10,
+        wisdom_score: 5,
+        charisma_score: 1
+    };
+
+    println!("STR Modifier: {}", demo.strength().modifier());
+    println!("DEX Modifier: {}", demo.dexterity().modifier());
+    println!("CON Modifier: {}", demo.constitution().modifier());
+    println!("INT Modifier: {}", demo.intelligence().modifier());
+    println!("WIS Modifier: {}", demo.wisdom().modifier());
+    println!("CHA Modifier: {}", demo.charisma().modifier());
 }