errors done sp2

Sprint-2/errors/0.js

@@ -4,6 +4,6 @@
 // interpret the error message and figure out why an error is occurring
 
 function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }

Sprint-2/errors/1.js

@@ -4,10 +4,9 @@
 // Try playing computer with the example to work out what is going on
 
 function convertToPercentage(decimalNumber) {
-  const decimalNumber = 0.5;
   const percentage = `${decimalNumber * 100}%`;
 
   return percentage;
 }
 
-console.log(decimalNumber);
+console.log(convertToPercentage(0.5));

Sprint-2/errors/2.js

@@ -3,7 +3,7 @@
 
 // this function should square any number but instead we're going to get an error
 
-function square(3) {
+function square(num) {
     return num * num;
 }