如何讓我的程序計算三角形的面積？在Python

Question

這是我的程序到目前爲止，有人能告訴我我做了什麼錯誤或給我一個修復它嗎？這一切都在蟒蛇，我真的很感激答案。彈出錯誤消息說：「不能通過類型爲'str'的非整數來乘序列」。

height = input("What is the height of the triangle? ") 
width = input("What is the width of the triangle? ") 

area = width * height /2 

print("The area of the triangle would be {0:f} ".format(area)) 

Answer 1

您應該將值轉換爲float數據類型：

height = float(input("What is the height of the triangle? ")) 
width = float(input("What is the width of the triangle? ")) 

area = width * height /2 

print("The area of the triangle would be {0:f} ".format(area)) 

Answer 2

您正在使用input得到你的電話號碼，但input方法的返回類型爲字符串。將其轉換爲int並且它將起作用。

例子：

area = int(width) * int(height) /2 

Answer 3

實際上使用的是高=輸入（「什麼是三角形的高度？」）的輸入是不整，這裏是你可以解決什麼

height = eval(raw_input("What is the height of the triangle? ")) 
width = eval(raw_input("What is the width of the triangle?")) 
area = width * height /2 
print("The area of the triangle would be {0:f} ".format(area))