Go language basic tutorial: Implementation methods of four arithmetic operations

Go language basic tutorial: implementation method of four arithmetic operations, specific code examples are required

Introduction:
Go language is a programming language for developing cloud native applications , favored by more and more developers. As a beginner learning Go language, it is essential to master basic calculation operations. This article will introduce the basic methods of implementing four arithmetic operations in Go language and provide specific code examples.

1. Addition operation
   Addition operation is one of the simplest arithmetic operations. We can use the plus sign ( ) to indicate addition operation. Here is a sample code:

package main

import "fmt"

func main() {
    var a, b int
    fmt.Print("请输入两个整数：")
    fmt.Scan(&a, &b)
    sum := a + b
    fmt.Printf("两数之和为：%d
", sum)
}

In the above code, we entered two integers from the terminal using the Scan function, then added the two integers and printed the result come out.

2. Subtraction operation
   Subtraction operation is another basic arithmetic operation. We can use the minus sign (-) to represent the subtraction operation. The following is a sample code:

package main

import "fmt"

func main() {
    var a, b int
    fmt.Print("请输入两个整数：")
    fmt.Scan(&a, &b)
    diff := a - b
    fmt.Printf("两数之差为：%d
", diff)
}

In the above code, we also use the Scan function to enter two integers from the terminal, and then subtract the second integer from the first an integer and print the result.

3. Multiplication operation
   Multiplication operation is also a common operation. We can use the multiplication sign (*) to represent multiplication operations. The following is a sample code:

package main

import "fmt"

func main() {
    var a, b int
    fmt.Print("请输入两个整数：")
    fmt.Scan(&a, &b)
    product := a * b
    fmt.Printf("两数之积为：%d
", product)
}

In the above code, we also use the Scan function to input two integers from the terminal, then multiply the two integers and multiply the result print it out.

4. Division operation
   The division operation is the most complex of the four arithmetic operations. We can use the division sign (/) to represent the division operation. The following is a sample code:

package main

import "fmt"

func main() {
    var a, b int
    fmt.Print("请输入两个整数：")
    fmt.Scan(&a, &b)

    if b == 0 {
        fmt.Println("除数不能为0")
        return
    }

    quotient := float64(a) / float64(b)
    fmt.Printf("两数之商为：%.2f
", quotient)
}

In the above code, we also use the Scan function to input two integers from the terminal. It should be noted that since the result of integer division in Go language is still an integer, we need to convert the dividend and divisor to floating point numbers first to get the accurate quotient. In addition, we also need to add a conditional judgment. If the divisor is 0, division operation cannot be performed.

Conclusion:
This article introduces the basic methods of implementing four arithmetic operations in Go language and provides specific code examples. By learning these basic operations, I believe readers will have a deeper understanding of the basic knowledge of the Go language. It is hoped that readers can further consolidate and expand their learning results through practice.

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