renamed

Chapter 06/Exercise 6.4

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+const myArr = [];
+ 
+for(let x=0; x<10; x++){
+  let val1 = 5 * x;
+  let val2 = x * x;
+  let res = cal(val1, val2, "+");
+  myArr.push(res);
+}
+console.log(myArr);
+function cal(a, b, op) {
+  if (op == "-") {
+    return a - b;
+  } else {
+    return a + b;
+  }
+}