What are the components of function types in Golang?

Go language function type consists of function name, input parameter list, output parameter list, and return value type. Syntax: func function name (input parameter list) (output parameter list) return value type; actual combat: Celsius to Fahrenheit function example: func celsiusToFahrenheit(celsius float64) float64 { return celsius*9/5 32 }.

Composition elements of function type

The function type in Go language consists of the following elements:

1. Function name

identifies the function.

2. Input parameters

are separated by commas and enclosed in brackets. The type is followed by the variable name.

3. Output parameters

are separated by commas and enclosed in parentheses. Multiple arguments return a tuple.

4. Return value type

type followed by the type name. If there is no return value, void is used.

Syntax:

func function_name(input_parameters_list) (output_parameters_list) return_type_name

Practical case

The following is a function that converts Celsius temperature to Fahrenheit temperature:

package main

import "fmt"

// 摄氏度转华氏度
func celsiusToFahrenheit(celsius float64) float64 {
    return celsius*9/5 + 32
}

func main() {
    // 输入摄氏温度
    celsius := 20.0

    // 调用转换函数
    fahrenheit := celsiusToFahrenheit(celsius)

    // 输出华氏温度
    fmt.Println("华氏温度：", fahrenheit)
}

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