Detailed explanation of Go language output method: the difference between fmt.Print and fmt.Println

Go language is a high-performance compiled programming language developed by Google. It is simple and efficient, so it is favored by programmers. In the Go language, the fmt package is a very commonly used package that contains formatted input/output functions. In this article, we will explore in detail two commonly used output methods in the fmt package: fmt.Print and fmt.Println, and will show the differences between them and provide specific code examples.

1. fmt.Print method

The fmt.Print method is a method used to print the specified content to the standard output (usually the terminal). The syntax of this method is as follows:

func Print(a ...interface{}) (n int, err error)

where a is the content to be printed, which can be of any type Multiple parameters. Here is a simple sample code:

package main

import "fmt"

func main() {
    fmt.Print("Hello, ")
    fmt.Print("World!")
}

The above code will output:

Hello, World!

2. fmt.Println method

fmt.Println method and fmt.Print method Similar, except that the content will be automatically wrapped after output. The syntax of this method is as follows:

func Println(a ...interface{}) (n int, err error)

The following is a sample code using fmt.Println:

package main

import "fmt"

func main() {
    fmt.Println("Hello,")
    fmt.Println("World!")
}

The above code will output:

Hello,
World!

Difference Analysis

1. fmt.Print will not automatically wrap, but fmt.Println will automatically wrap after each output is completed.
2. Using fmt.Println will make the output more readable, with clear separation between different parts.
3. When we need to output multiple contents on the same line, we can use fmt.Print; and when we need to wrap different contents in a new line, we can use fmt.Println.

Summary

In the Go language, the fmt package is a very important package, and the fmt.Print and fmt.Println methods are what we often use in daily development. method. Through the introduction of this article, I believe you have a deep understanding of the usage and differences of these two methods. Choosing the appropriate output method according to the specific situation can make the code output clearer and improve the readability of the code.

I hope this article is helpful to you, thank you for reading!

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