adding bank

bank/bank.go

@@ -0,0 +1,59 @@
+package main
+
+import "fmt"
+
+func main() {
+	var accountBalance = 1000.0
+
+	fmt.Println("Welcome to Go Bank!")
+
+	for {
+		fmt.Println("What do you want to do?")
+		fmt.Println("1. Check balance")
+		fmt.Println("2. Deposit money")
+		fmt.Println("3. Withdraw money")
+		fmt.Println("4. Exit")
+
+		var choice int
+		fmt.Print("Your choice: ")
+		fmt.Scan(&choice)
+
+		switch choice {
+		case 1:
+			fmt.Println("Your balance is: ", accountBalance)
+		case 2:
+			fmt.Print("Your deposit: ")
+			var depositAmount float64
+			fmt.Scan(&depositAmount)
+
+			if depositAmount <= 0 {
+				fmt.Println("Invalid amount. Must be greater than 0.")
+				continue
+			}
+
+			accountBalance += accountBalance
+			fmt.Println("Balance updated! New amount:", accountBalance)
+		case 3:
+			fmt.Print("Your withdrawal")
+			var withdrawalAmount float64
+			fmt.Scan(&withdrawalAmount)
+
+			if withdrawalAmount <= 0 {
+				fmt.Println("Invalid amount. Must be greater than 0.")
+				continue
+			}
+
+			if withdrawalAmount > accountBalance {
+				fmt.Println("Invalid amount. You can't withdraw more than you have.")
+				continue
+			}
+
+			accountBalance -= withdrawalAmount
+			fmt.Println("Balance updated! New amount:", accountBalance)
+		default:
+			fmt.Println("Goodbye!")
+			fmt.Println("Thanks for choosing our bank")
+			return
+		}
+	}
+}

bank/go.mod

@@ -0,0 +1,3 @@
+module example.com/bank
+
+go 1.23.1

profitCalculator/app.go

@@ -3,26 +3,23 @@ package main
 import "fmt"
 
 func main() {
-	var revenue float64
-	var expenses float64
-	var taxRate float64
+	revenue := getUserInput("Revenue: ")
+	expenses := getUserInput("Expenses: ")
+	taxRate := getUserInput("Tax Rate: ")
 
-	fmt.Print("Revenue: ")
-	fmt.Scan(&revenue)
+	ebt, profit, ratio := calculateFinancials(revenue, expenses, taxRate)
 	
-	fmt.Print("Expenses: ")
-	fmt.Scan(&expenses)
 
-	fmt.Print("Tax Rate: ")
-	fmt.Scan(&taxRate)
+	fmt.Printf("%.1f\n", ebt)
+	fmt.Printf("%.1f\n", profit)
+	fmt.Printf("%.3f", ratio)
+}
 
+func calculateFinancials(revenue, expenses, taxRate float64) (float64, float64, float64) {
 	ebt := revenue - expenses
 	profit := ebt * (1 - taxRate/100)
 	ratio := ebt / profit
-
-	fmt.Println(ebt)
-	fmt.Println(profit)
-	fmt.Println(ratio)
+	return ebt, profit, ratio
 }
 
 func getUserInput(infoText string) float64 {