resolve error 0

Author: Alaterry8

Sprint-3/1-key-errors/0.js

@@ -3,7 +3,13 @@
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
-// The str identifier has already been declared in the function parameter and cannot be declared anywhere else inside the function as a variable 
+// The str identifier has already been declared in the function parameter and cannot be declared anywhere else inside the function as a variable
+
+function capitalise(str) {
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+
 
 // =============> write your explanation here
 // When a parameter is declared in a function, it causes an Error if it is declared inside the function as a variable, either you change the name used for the instructions or remove let