22 lines
278 B
Go
22 lines
278 B
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strconv"
|
|
)
|
|
|
|
func main() {
|
|
// lesson: if
|
|
|
|
if len(os.Args) != 3 {
|
|
fmt.Println("Usage: calc <number1> <number2>")
|
|
return
|
|
}
|
|
|
|
a, _ := strconv.Atoi(os.Args[1])
|
|
b, _ := strconv.Atoi(os.Args[2])
|
|
|
|
fmt.Printf("%v + %v = %v\n", a, b, a+b)
|
|
}
|