from math import *
def dist(x1, y1, x2, y2):
length = sqrt((int(x1) - int(x2))**2 +
return length
a = input("请输入各点的坐标:") # 如“2,3,4,5”则表示坐标点(2,3)和(4,5)
b = a.split(",")
if len(b) % 2 != 0:
print("输入的坐标有误!")
else:
s = 0
for i in range(0,
s = s +
print("折线的长度为:", s)
(1)如输入的数据为“2,3,5,7,8,11”,则折线的长度为:①
A. 程序输出正确的折线长度
B. 输入的坐标有误!
C. 程序运行出错!
(2)为使程序能正确运行,请在划线处填入合适的代码。
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2