struct subexample { let decrementer: Int subscript(index: Int) -> Int { return decrementer / index } } let division = subexample(decrementer: 100) print("100 除以 9 等于 \(division[9])") print("100 除以 2 等于 \(division[2])") print("100 除以 3 等于 \(division[3])") print("100 除以 5 等于 \(division[5])") print("100 除以 7 等于 \(division[7])")