分别用记语句和switch语句实现以下计算,其中a、b、c的值从键盈输入 ax? + bx+c. asin' b +x. 0.5<x<1.5 1.5<x<3.5 Imb+. 3.5<1<5.5
时间: 2024-05-04 17:22:38 浏览: 12
使用if语句实现:
```python
a = float(input("请输入a的值:"))
b = float(input("请输入b的值:"))
c = float(input("请输入c的值:"))
x = float(input("请输入x的值:"))
if 0.5 < x <= 1.5:
result = a * x ** 2 + b * x + c
elif 1.5 < x <= 3.5:
result = a * (b + x)
else:
result = b * (x - 1) ** 3
print("计算结果为:", result)
```
使用switch语句实现:
```python
a = float(input("请输入a的值:"))
b = float(input("请输入b的值:"))
c = float(input("请输入c的值:"))
x = float(input("请输入x的值:"))
result = 0
def case1():
global result
result = a * x ** 2 + b * x + c
def case2():
global result
result = a * (b + x)
def case3():
global result
result = b * (x - 1) ** 3
switch = {
1: case1,
2: case2,
3: case3
}
if 0.5 < x <= 1.5:
switch[1]()
elif 1.5 < x <= 3.5:
switch[2]()
else:
switch[3]()
print("计算结果为:", result)
```