Lesson 1 complete

src/index.ts

@@ -1,11 +1,26 @@
-import readline from 'node:readline';
+function CalculateRectangleArea(sideA: number, sideB: number) : number {
+  return sideA * sideB;
+}
 
-const rl = readline.createInterface({
-  input: process.stdin,
-  output: process.stdout,
-});
+//Virtual console
+let chisloOne: string = '2';
+let chisloTwo: string = 'A';
+
+//Solution
+let sideA = Number.parseInt(chisloOne, 10);
+let sideB = Number.parseInt(chisloTwo, 10);
+
+// && - AND
+// || - OR
+// !
+if (Number.isNaN(sideA) || sideA <= 0 ){
+  console.log(`Your first value is invalid: ${sideA}`)
+}
+if (Number.isNaN(sideB) || sideB <= 0){
+  console.log(`Your second value is invalid: ${sideB}`)
+}
+
+else{
+  console.log(`Area of rectangle is: ${CalculateRectangleArea(sideA, sideB)}`);
+}
 
-rl.question('Enter something', value => {
-    console.log(`Hi ${value}`);
-    rl.close;
-});