Golang程序 创建一个可以执行基本计算器操作的类
为了创建一个可以执行基本计算器操作的类,我们可以采取以下步骤
- 我们可以用两个数字 a 和 b 定义一个 计算器 类 。
- 定义一个成员方法来计算两个数字的加法。
- 定义一个成员方法来计算两个数字的乘法运算。
- 定义一个成员方法来计算两个数字的除法。
- 定义一个成员方法来计算两个数的减法。
- 在 main 方法中,声明两个变量, a和b
- 获取一个 计算器 的实例 。
- 初始化一个选择变量,在此基础上可以进行数学运算。
例子
package main
import (
"fmt"
)
type Calculator struct {
a int
b int
}
func (c *Calculator)Add(){
fmt.Println("Addition of two numbers: ", c.a + c.b)
}
func (c *Calculator)Mul(){
fmt.Println("Multiplication of two numbers: ", c.a * c.b)
}
func (c *Calculator)Div(){
fmt.Println("Division of two numbers: ", c.a / c.b)
}
func (c *Calculator)Sub(){
fmt.Println("Subtraction of two numbers: ", c.a - c.b)
}
func main(){
var a, b int
fmt.Print("Enter the first number: ")
fmt.Scanf("%d", &a)
fmt.Print("Enter the second number: ")
fmt.Scanf("%d", &b)
cal := Calculator{
a: a,
b: b,
}
c:=1
for c>=1 {
fmt.Println("Enter 1 for Addition: ")
fmt.Println("Enter 2 for Multiplication: ")
fmt.Println("Enter 3 for Division: ")
fmt.Println("Enter 4 for Subtraction: ")
fmt.Print("Enter 5 for Exit: ")
fmt.Scanf("%d", &c)
switch c {
case 1:
cal.Add()
case 2:
cal.Mul()
case 3:
cal.Div()
case 4:
cal.Sub()
case 5:
c = 0
break
default:
fmt.Println("Enter valid number.")
}
}
}
Go
输出
Enter the first number: 7
Enter the second number: 3
Enter 1 for Addition:
Enter 2 for Multiplication:
Enter 3 for Division:
Enter 4 for Subtraction:
Enter 5 for Exit: 1
Addition of two numbers: 10
Enter 1 for Addition:
Enter 2 for Multiplication:
Enter 3 for Division:
Enter 4 for Subtraction:
Enter 5 for Exit: 2
Multiplication of two numbers: 21
Enter 1 for Addition:
Enter 2 for Multiplication:
Enter 3 for Division:
Enter 4 for Subtraction:
Enter 5 for Exit: 3
Division of two numbers: 2
Enter 1 for Addition:
Enter 2 for Multiplication:
Enter 3 for Division:
Enter 4 for Subtraction:
Enter 5 for Exit: 4
Subtraction of two numbers: 4
Enter 1 for Addition:
Enter 2 for Multiplication:
Enter 3 for Division:
Enter 4 for Subtraction:
Enter 5 for Exit: 5
Go