diff --git a/README.md b/README.md
index f681228..b6a0b17 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-https://tinchicus.com/2022/09/26/rust-listado-del-curso-inicial/
+##  https://tinchicus.com/2022/09/26/rust-listado-del-curso-inicial/
 
 - https://tinchicus.com/2022/06/01/rust-usando-a-cargo/ (hola_mundo)
 - https://tinchicus.com/2022/06/03/rust-strings/ (cadenas)
@@ -16,4 +16,5 @@ https://tinchicus.com/2022/09/26/rust-listado-del-curso-inicial/
 - https://tinchicus.com/2022/06/21/rust-for/ (bucles)
 - https://tinchicus.com/2022/06/22/rust-if/ (condicion)
 - https://tinchicus.com/2022/06/23/rust-match/ (coincidir)
-- https://tinchicus.com/2022/06/24/rust-funciones-y-metodos/ (ejemplo01)
\ No newline at end of file
+- https://tinchicus.com/2022/06/24/rust-funciones-y-metodos/ (ejemplo01)
+- https://tinchicus.com/2022/06/27/rust-closures/ (cierre)
\ No newline at end of file
diff --git a/cierre/Cargo.toml b/cierre/Cargo.toml
new file mode 100644
index 0000000..7caad4f
--- /dev/null
+++ b/cierre/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "cierre"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/cierre/src/main.rs b/cierre/src/main.rs
new file mode 100644
index 0000000..19a93cb
--- /dev/null
+++ b/cierre/src/main.rs
@@ -0,0 +1,39 @@
+use std::thread;
+use std::time::Duration;
+
+fn rutina_ejercicio(i: u32, a: u32) {
+    let cierre = |num| {
+        println!("Recalculando...");
+        thread::sleep(Duration::from_secs(2));
+        num
+    };
+    if i < 25 {
+        println!("Hoy haz {} sentadillas", cierre(i));
+        println!("Despues haz {} sentadillas", cierre(i));
+    } else {
+        if a == 3 {
+            println!("Descansa un poco y recuerda hidratarte");
+        } else {
+            println!("Hoy corre por {} minutos", cierre(i));
+        }
+    }
+}
+
+fn main() {
+    let valor_especificado = 27;
+    let numero_al_azar = 5;
+
+    rutina_ejercicio(valor_especificado, numero_al_azar);
+
+    // ejemplo creado por mi
+
+    let imprime_algo = |texto| {
+        println!("WTF!!!!!");
+        texto
+    };
+
+    println!(
+        "Vamos a imprimir el texto....{}",
+        imprime_algo("Mis cojones mangas 3")
+    )
+}
diff --git a/ejemplo01/src/main.rs b/ejemplo01/src/main.rs
index f582d64..401e79d 100644
--- a/ejemplo01/src/main.rs
+++ b/ejemplo01/src/main.rs
@@ -10,5 +10,5 @@ impl Perro {
 
 fn main() {
     let perro = Perro::nuevo(98, 87);
-    println!("{} {}", perro.edad, perro.peso)
+    println!("{} {}", perro.edad, perro.peso);
 }