forked from steger/pr3-ws202627
137 lines
2.4 KiB
Go
137 lines
2.4 KiB
Go
package main
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import (
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"fmt"
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)
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func main() {
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const (
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add = "add"
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subtract = "subtract"
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multiply = "multiply"
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divide = "divide"
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exit = "exit"
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)
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//TODO: implement according to README.md
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fmt.Println("Welcome to the Simple Calculator!")
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for {
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var operation string
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fmt.Print("\nEnter operation (add, subtract, multiply, divide, exit): ")
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fmt.Scan(&operation)
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//the following code just demonstrates how to use fmt.Scan
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if operation == exit {
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fmt.Println("Goodbye!")
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break
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}
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var str string
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fmt.Print("Please enter a string: ")
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fmt.Scan(&str)
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var num1, num2 float64
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fmt.Print("Enter the first number: ")
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fmt.Scan(&num1)
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fmt.Print("Enter the second number: ")
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fmt.Scan(&num2)
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var x float64
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fmt.Print("Please enter a float: ")
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fmt.Scan(&x)
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fmt.Printf("You entered '%s' and %f\n", str, x)
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switch operation {
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case add:
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fmt.Printf("Result: %.2f\n", num1+num2)
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case subtract:
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fmt.Printf("Result: %.2f\n", num1-num2)
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case multiply:
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fmt.Printf("Result: %.2f\n", num1*num2)
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case divide:
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if num2 == 0 {
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fmt.Println("Error: Division by zero is not allowed!")
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} else {
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fmt.Printf("Result: %.2f\n", num1/num2)
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}
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default:
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fmt.Println("Invalid operation. Please try again.")
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}
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}
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}
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package main
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import (
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"fmt"
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)
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const (
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opAdd = "add"
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opSubtract = "subtract"
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opMultiply = "multiply"
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opDivide = "divide"
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opExit = "exit"
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)
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var result float64
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func add(a, b float64) {
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result = a + b
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}
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func multiply(a, b float64) {
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result = a * b
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}
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func subtract(a, b float64) {
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result = a - b
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}
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func divide(a, b float64) {
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result = a / b
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}
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func main() {
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var x float64
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var y float64
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//TODO: implement according to README.md
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//the following code just demonstrates how to use fmt.Scan
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for {
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fmt.Print("What would you like to do? (add|subtract|divide|multiply|exit)")
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var str string
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fmt.Scan(&str)
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if str == opExit {
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break
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} else {
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fmt.Print("Please enter a float: ")
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fmt.Scan(&x)
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fmt.Print("Please enter a float: ")
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fmt.Scan(&y)
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switch str {
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case opAdd:
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add(x, y)
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fmt.Println(result)
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case opMultiply:
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multiply(x, y)
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fmt.Println(result)
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case opDivide:
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if y == 0 {
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fmt.Println("Division by 0 is not possible")
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continue
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}
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divide(x, y)
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fmt.Println(result)
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case opSubtract:
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subtract(x, y)
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fmt.Println(result)
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default:
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fmt.Println("Unknown operation")
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}
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}
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}
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} |