diff --git a/Cargo.lock b/Cargo.lock
index 9f6ace4..3d8ea98 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -410,6 +410,7 @@ dependencies = [
  "logos",
  "salsa-2022",
  "tracing",
+ "unescaper",
 ]
 
 [[package]]
@@ -1731,6 +1732,15 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6af6ae20167a9ece4bcb41af5b80f8a1f1df981f6391189ce00fd257af04126a"
 
+[[package]]
+name = "unescaper"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8f0f68e58d297ba8b22b8b5a96a87b863ba6bb46aaf51e19a4b02c5a6dd5b7f"
+dependencies = [
+ "thiserror",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"
diff --git a/crates/concrete_ast/src/expressions.rs b/crates/concrete_ast/src/expressions.rs
index 12f8752..cdecc70 100644
--- a/crates/concrete_ast/src/expressions.rs
+++ b/crates/concrete_ast/src/expressions.rs
@@ -18,8 +18,8 @@ pub enum Expression {
 pub enum ValueExpr {
     ConstBool(bool),
     ConstChar(char),
-    ConstInt(u64),
-    ConstFloat(()),
+    ConstInt(u128),
+    ConstFloat(String),
     ConstStr(String),
     Path(PathOp),
     Deref(PathOp),
diff --git a/crates/concrete_codegen_mlir/src/codegen.rs b/crates/concrete_codegen_mlir/src/codegen.rs
index 0db203f..cd4da68 100644
--- a/crates/concrete_codegen_mlir/src/codegen.rs
+++ b/crates/concrete_codegen_mlir/src/codegen.rs
@@ -18,7 +18,10 @@ use melior::{
         cf, func, memref,
     },
     ir::{
-        attribute::{FlatSymbolRefAttribute, IntegerAttribute, StringAttribute, TypeAttribute},
+        attribute::{
+            FlatSymbolRefAttribute, FloatAttribute, IntegerAttribute, StringAttribute,
+            TypeAttribute,
+        },
         r#type::{FunctionType, IntegerType, MemRefType},
         Block, BlockRef, Location, Module as MeliorModule, Operation, Region, Type, Value,
         ValueLike,
@@ -133,6 +136,7 @@ impl<'ctx, 'parent> ScopeContext<'ctx, 'parent> {
             "u32" | "i32" => IntegerType::new(context, 32).into(),
             "u16" | "i16" => IntegerType::new(context, 16).into(),
             "u8" | "i8" => IntegerType::new(context, 8).into(),
+            "char" => IntegerType::new(context, 32).into(),
             "f32" => Type::float32(context),
             "f64" => Type::float64(context),
             "bool" => IntegerType::new(context, 1).into(),
@@ -813,7 +817,22 @@ fn compile_value_expr<'ctx, 'parent: 'ctx>(
                 .result(0)?
                 .into())
         }
-        ValueExpr::ConstFloat(_) => todo!(),
+        ValueExpr::ConstFloat(value) => {
+            let float_type = if let Some(type_info) = type_info {
+                scope_ctx.resolve_type_spec(context, type_info)?
+            } else {
+                Type::float64(context)
+            };
+            let value = FloatAttribute::new(
+                context,
+                value.parse().expect("failed to parse float"),
+                float_type,
+            );
+            Ok(block
+                .append_operation(arith::constant(context, value.into(), location))
+                .result(0)?
+                .into())
+        }
         ValueExpr::ConstStr(_) => todo!(),
         ValueExpr::Path(value) => {
             compile_path_op(session, context, scope_ctx, _helper, block, value)
diff --git a/crates/concrete_driver/tests/programs.rs b/crates/concrete_driver/tests/programs.rs
index fecc2f3..660d9bc 100644
--- a/crates/concrete_driver/tests/programs.rs
+++ b/crates/concrete_driver/tests/programs.rs
@@ -132,26 +132,58 @@ fn test_import() {
 }
 
 #[test]
-fn test_reference() {
+fn test_floats() {
     let source = r#"
-        mod Simple {
-            fn main(argc: i64) -> i64 {
-                let x: i64 = argc;
-                return references(x) + dereference(&x);
-            }
+    mod Simple {
+        fn main() -> i64 {
+            let a: f32 = my_f32(2.0, 4.0);
+            let b: f64 = my_f64(2.0, 4.0);
+            return 1;
+        }
 
-            fn dereference(a: &i64) -> i64 {
-                return *a;
-            }
+        fn my_f32(x: f32, y: f32) -> f32 {
+            let literal: f32 = 2.0;
+            let literal2: f32 = 2.001;
+            let literal3: f32 = 0.1;
+            return x + y + literal2 + literal3;
+        }
 
-            fn references(a: i64) -> i64 {
-                let x: i64 = a;
-                let y: &i64 = &x;
-                return *y;
-            }
+        fn my_f64(x: f64, y: f64) -> f64 {
+            let literal: f64 = 2.0;
+            let literal2: f64 = 2.002;
+            let literal3: f64 = 0.02;
+            return x + y + literal2 + literal3;
         }
+    }
     "#;
 
+    let result = compile_program(source, "floats", false).expect("failed to compile");
+
+    let output = run_program(&result.binary_file).expect("failed to run");
+    let code = output.status.code().unwrap();
+    assert_eq!(code, 1);
+}
+
+#[test]
+fn test_reference() {
+    let source = r#"
+            mod Simple {
+                fn main(argc: i64) -> i64 {
+                    let x: i64 = argc;
+                    return references(x) + dereference(&x);
+                }
+
+                fn dereference(a: &i64) -> i64 {
+                    return *a;
+                }
+
+                fn references(a: i64) -> i64 {
+                    let x: i64 = a;
+                    let y: &i64 = &x;
+                    return *y;
+                }
+            }
+        "#;
     let result = compile_program(source, "references", false).expect("failed to compile");
 
     let output = run_program(&result.binary_file).expect("failed to run");
diff --git a/crates/concrete_parser/Cargo.toml b/crates/concrete_parser/Cargo.toml
index 239eba6..f0422e6 100644
--- a/crates/concrete_parser/Cargo.toml
+++ b/crates/concrete_parser/Cargo.toml
@@ -13,6 +13,7 @@ concrete_ast = { path = "../concrete_ast"}
 salsa = { git = "https://github.com/salsa-rs/salsa.git", package = "salsa-2022" }
 ariadne = { version = "0.4.0", features = ["auto-color"] }
 itertools = "0.12.0"
+unescaper = "0.1.3"
 
 [build-dependencies]
 lalrpop = "0.20.0"
diff --git a/crates/concrete_parser/src/grammar.lalrpop b/crates/concrete_parser/src/grammar.lalrpop
index bc3c1ee..0f91c54 100644
--- a/crates/concrete_parser/src/grammar.lalrpop
+++ b/crates/concrete_parser/src/grammar.lalrpop
@@ -30,8 +30,10 @@ extern {
 
     // literals
     "identifier" => Token::Identifier(<String>),
-    "integer" => Token::Integer(<u64>),
+    "integer" => Token::Integer(<u128>),
+    "float" => Token::Float(<String>),
     "string" => Token::String(<String>),
+    "char" => Token::Char(<char>),
     "boolean" => Token::Boolean(<bool>),
 
     // Other
@@ -150,7 +152,7 @@ pub(crate) TypeSpec: ast::types::TypeSpec = {
   },
   <lo:@L> <is_ref:RefType?> "[" <of_type:TypeSpec> <size:(";" <"integer">)> "]"<hi:@R> => ast::types::TypeSpec::Array {
     of_type: Box::new(of_type),
-    size,
+    size: size.map(|x| x.try_into().expect("size is too big")),
     is_ref,
     span: Span::new(lo, hi),
   }
@@ -355,8 +357,10 @@ pub UnaryOp: ast::expressions::UnaryOp = {
 
 pub(crate) ValueExpr: ast::expressions::ValueExpr = {
   <"integer"> => ast::expressions::ValueExpr::ConstInt(<>),
+  <"float"> => ast::expressions::ValueExpr::ConstFloat(<>),
   <"boolean"> => ast::expressions::ValueExpr::ConstBool(<>),
   <"string"> => ast::expressions::ValueExpr::ConstStr(<>),
+  <"char"> => ast::expressions::ValueExpr::ConstChar(<>),
   <PathOp> => ast::expressions::ValueExpr::Path(<>),
   "*" <PathOp> => ast::expressions::ValueExpr::Deref(<>),
   <ref_type:RefType> <path:PathOp> => ast::expressions::ValueExpr::AsRef {
diff --git a/crates/concrete_parser/src/lib.rs b/crates/concrete_parser/src/lib.rs
index d0b4e1b..52c0a51 100644
--- a/crates/concrete_parser/src/lib.rs
+++ b/crates/concrete_parser/src/lib.rs
@@ -89,7 +89,7 @@ mod ModuleName {
         "##;
         let lexer = Lexer::new(source);
         let parser = grammar::ProgramParser::new();
-        dbg!(parser.parse(lexer).unwrap());
+        parser.parse(lexer).unwrap();
     }
 
     #[test]
@@ -104,7 +104,7 @@ mod ModuleName {
 }"##;
         let lexer = Lexer::new(source);
         let parser = grammar::ProgramParser::new();
-        dbg!(parser.parse(lexer).unwrap());
+        parser.parse(lexer).unwrap();
     }
 
     #[test]
@@ -116,7 +116,7 @@ mod ModuleName {
 }"##;
         let lexer = Lexer::new(source);
         let parser = grammar::ProgramParser::new();
-        dbg!(parser.parse(lexer).unwrap());
+        parser.parse(lexer).unwrap();
     }
 
     #[test]
@@ -128,6 +128,6 @@ mod ModuleName {
 }"##;
         let lexer = Lexer::new(source);
         let parser = grammar::ProgramParser::new();
-        dbg!(parser.parse(lexer).unwrap());
+        parser.parse(lexer).unwrap();
     }
 }
diff --git a/crates/concrete_parser/src/tokens.rs b/crates/concrete_parser/src/tokens.rs
index 316a74d..1781db7 100644
--- a/crates/concrete_parser/src/tokens.rs
+++ b/crates/concrete_parser/src/tokens.rs
@@ -57,12 +57,25 @@ pub enum Token {
     Identifier(String),
 
     // Literals
-    #[regex(r"\d+", |lex| lex.slice().parse::<u64>().unwrap())]
-    Integer(u64),
-    #[regex(r#""(?:[^"]|\\")*""#, |lex| lex.slice().to_string())]
+    #[regex(r"\d+", |lex| lex.slice().parse::<u128>().unwrap(), priority = 2)]
+    Integer(u128),
+    #[regex(r"\d+\.\d+", |lex| lex.slice().to_string(), priority = 1)]
+    Float(String),
+    #[regex(r#""(?:[^"]|\\")*""#, |lex| {
+        let slice = lex.slice();
+        let len = slice.len();
+        unescaper::unescape(&slice[1..(len-1)]).expect("failed to unescape string")
+    })]
     String(String),
     #[regex(r"(true|false)", |lex| lex.slice().parse::<bool>().unwrap())]
     Boolean(bool),
+    #[regex(r#"'(?:[^']|\\')*'"#, |lex| {
+        let slice = lex.slice();
+        let len = slice.len();
+        let real_char = unescaper::unescape(&slice[1..(len-1)]).expect("failed to unescape char").to_string();
+        real_char.chars().next().unwrap()
+    })]
+    Char(char),
 
     #[token("(")]
     LeftParen,
diff --git a/examples/chars.con b/examples/chars.con
new file mode 100644
index 0000000..cb878d5
--- /dev/null
+++ b/examples/chars.con
@@ -0,0 +1,13 @@
+ mod Simple {
+    fn main() -> i64 {
+        let a: char = hello_chars('\t');
+        return 1;
+    }
+
+    fn hello_chars(a: char) -> char {
+        let x: char = 'b';
+        let newline: char = '\n';
+
+        return x + newline + a;
+    }
+}
diff --git a/examples/floats.con b/examples/floats.con
new file mode 100644
index 0000000..bcfca6f
--- /dev/null
+++ b/examples/floats.con
@@ -0,0 +1,21 @@
+ mod Simple {
+    fn main() -> i64 {
+        let a: f32 = my_f32(2.0, 4.0);
+        let b: f64 = my_f64(2.0, 4.0);
+        return 1;
+    }
+
+    fn my_f32(x: f32, y: f32) -> f32 {
+        let literal: f32 = 2.0;
+        let literal2: f32 = 2.001;
+        let literal3: f32 = 0.1;
+        return x + y + literal2 + literal3;
+    }
+
+    fn my_f64(x: f64, y: f64) -> f64 {
+        let literal: f64 = 2.0;
+        let literal2: f64 = 2.002;
+        let literal3: f64 = 0.02;
+        return x + y + literal2 + literal3;
+    }
+}