diff --git a/Untitled-1.js b/Untitled-1.js
new file mode 100644
index 0000000..65372a9
--- /dev/null
+++ b/Untitled-1.js
@@ -0,0 +1,33 @@
+// we covered .map .filter and foreach
+//const forEacReturnValue= arrayOfFellowws.forEach( eachFel +> console.log(" check" + eachFel.name))
+
+const checkFellowName = (eachFel) => {
+    console.log(" check" + eachFel.name)
+}
+
+//console.log(checkFellowName)
+//arraoOfFellows.forEach(checkFellowName)
+
+
+// arrayofFellows.forEach( checkFellowName )
+//arrayOfFellows.forEach(checkFellowName())
+arrayOfFellows.forEach( () => checkFellowName () )
+
+// structure an anonymous function and use it in a dynamic way .
+//filtering process on an array of objects
+
+const arrayOfFellows = [
+    {name: "PersonA"},
+    {name: "PersonAB"},
+    {name: "PersonABC"},
+    {name: "PersonABCD"},
+    {name: "PersonABCDE"}
+]
+const FilteredArrayOfFellow = []
+
+for(const eachFell of arrayOfFellows) {
+    if(eachFell.name.length> 5){
+        FilteredArrayOfFellow.push(eachFell)
+    }
+}
+console.log(FilteredArrayOfFellow)
\ No newline at end of file
diff --git a/index.js b/index.js
index 3bb4d07..8d5ce43 100644
--- a/index.js
+++ b/index.js
@@ -4,7 +4,33 @@
  * Depending on the operation, either add up all of the numbers or subtract all of the numbers, from left to right.
  * @returns {number} The result of either adding all numbers or subtracting all numbers, depending on the arguments added to the command line.
  */
-function calculator() {}
+function calculator( ) {
+const thisACalc = (something,a,b,c) =>{
+    const calculator = something(a,b,c);
+    console.log(add);
+};
+
+if(something === "plus") {
+const plus = (a,b,c) => {
+    return a + b + c;
+};
+
+} else if (something === "minus") {
+    const minus = (a,b,c) => {
+        return a - b - c;
+    };
+
+}else if (something === "divide") {
+        return "Invalid operation: diivide";
+    };
+    
+}else if (something === " ") {
+        return "No numbers provided";
+    };
+ if (something !== "something") {
+        return " No operation provided";
+    };
+
 
 // Don't change anything below this line.
 module.exports = calculator;
diff --git a/readme.md b/readme.md
index 2ae3fca..31789e7 100644
--- a/readme.md
+++ b/readme.md
@@ -149,5 +149,5 @@ node index.js
 ## Tips
 
 - Remember that the first and second elements of `process.argv` are always the path to the `node` program and the filepath.
-- Remember that each argument from the command line will be read in as a string. You will need some way to convert the inputs from strings to numbers.
+- Remember that each argument from the command line will be read in as a string. You will need some way to con10vert the inputs from strings to numbers.
 - Because you don't know how many numbers will be passed in, you may need to _iterate_ over the numbers.