| fun box(): String { | |
| val a1: Byte? = 1 + 1 | |
| val a2: Short? = 1 + 1 | |
| val a3: Int? = 1 + 1 | |
| val a4: Long? = 1 + 1 | |
| val a5: Double? = 1.0 + 1 | |
| val a6: Float? = 1f + 1 | |
| val a7: Char? = 'A' + 1 | |
| val a8: Int? = 'B' - 'A' | |
| if (a1!! != 2.toByte()) return "fail 1" | |
| if (a2!! != 2.toShort()) return "fail 2" | |
| if (a3!! != 2) return "fail 3" | |
| if (a4!! != 2L) return "fail 4" | |
| if (a5!! != 2.0) return "fail 5" | |
| if (a6!! != 2f) return "fail 6" | |
| if (a7!! != 'B') return "fail 7" | |
| if (a8!! != 1) return "fail 8" | |
| return "OK" | |
| } |