#encoding:utf-8
import math

#向上取整
print("math.ceil---")
print("math.ceil(2.3) =>", math.ceil(2.3))
print("math.ceil(2.6) => ", math.ceil(2.6))

#向下取整
print ("\nmath.floor---")
print("math.floor(2.3) => ", math.floor(2.3))
print("math.floor(2.6) => ", math.floor(2.6))

#四舍五入
print("\nround---")
print("round(2.3) => ", round(2.3))
print("round(2.6) => ", round(2.6))

#这三个的返回结果都是浮点型
print("\n\nNOTE:every result is type of float")
print("math.ceil(2) => ", math.ceil(2))
print("math.floor(2) => ", math.floor(2))
print("round(2) => ", round(2))