Python 程式可建立執行計算器操作的類
當需要建立一個執行計算器操作的類時,將採用物件導向的方法。這裡先定義一個類,並定義屬性。在類中定義一些能夠執行特定操作的函式。建立一個類的例項,並使用這些函式執行計算器操作。
下面是它的一個演示 −
例子
class calculator_implementation():
def __init__(self,in_1,in_2):
self.a=in_1
self.b=in_2
def add_vals(self):
return self.a+self.b
def multiply_vals(self):
return self.a*self.b
def divide_vals(self):
return self.a/self.b
def subtract_vals(self):
return self.a-self.b
input_1 = int(input("Enter the first number: "))
input_2 = int(input("Enter the second number: "))
print("The entered first and second numbers are : ")
print(input_1, input_2)
my_instance = calculator_implementation(input_1,input_2)
choice=1
while choice!=0:
print("0. Exit")
print("1. Addition")
print("2. Subtraction")
print("3. Multiplication")
print("4. Division")
choice=int(input("Enter your choice... "))
if choice==1:
print("The computed addition result is : ",my_instance.add_vals())
elif choice==2:
print("The computed subtraction result is : ",my_instance.subtract_vals())
elif choice==3:
print("The computed product result is : ",my_instance.multiply_vals())
elif choice==4:
print("The computed division result is : ",round(my_instance.divide_vals(),2))
elif choice==0:
print("Exit")
else:
print("Sorry, invalid choice!")
print()輸出
Enter the first number: 70 Enter the second number: 2 The entered first and second numbers are : 70 2 0. Exit 1. Addition 2. Subtraction 3. Multiplication 4. Division Enter your choice... 1 The computed addition result is : 72 0. Exit 1. Addition 2. Subtraction 3. Multiplication 4. Division Enter your choice... 2 The computed subtraction result is : 68 0. Exit 1. Addition 2. Subtraction 3. Multiplication 4. Division Enter your choice... 3 The computed product result is : 140 0. Exit 1. Addition 2. Subtraction 3. Multiplication 4. Division Enter your choice... 4 The computed division result is : 35.0 0. Exit 1. Addition 2. Subtraction 3. Multiplication 4. Division Enter your choice... 0 Exit
說明
- 這裡定義了一個名為“calculator_implementation”的類,它具有“add_vals”、“subtract_vals”、“multiply_vals”和“divide_vals”之類的函式。
- 它們分別用於執行加、減、乘、除之類的計算器操作。
- 這裡建立了這個類的例項。
- 輸入兩個數字的值,並對其執行操作。
- 將在控制檯上顯示相關訊息和輸出。
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