golang ascii to character

In Golang, ASCII encoding represents a set of characters, and each character has a corresponding ASCII code. ASCII code is a basic encoding method that uses 7 bits to represent 128 different characters, including numbers, letters, punctuation marks, control characters, etc.

ASCII code was developed by the American Standards Committee for Information Interchange (ANSI) in 1963. It is currently one of the most commonly used character encoding standards.

In Golang, we can convert the ASCII code to the corresponding through the Atoi() and Itoa() functions provided by the strconv package character.

Among them, the Atoi() function is used to convert ASCII codes into characters, while the Itoa() function is used to convert characters into ASCII codes.

Let’s take a look at the specific steps:

1. Convert ASCII code to characters

In Golang, we can pass The Atoi() function provided by the strconv package converts ASCII codes into characters. The specific syntax format is as follows:

func Atoi(s string) (int, error)

Among them, the parameter s indicates to be converted ASCII code string.

The return value includes two: converted decimal integer and error message.

The following is a sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    ascii := 72  // H的ASCII码
    char := strconv.Itoa(ascii)
    fmt.Println("ASCII code to char: ", char)
}

The output result is:

ASCII code to char:  H

In the above code, we assign the ASCII code to the variable ascii , then use the Itoa() function to convert it into characters, and finally print it out through the println() function.

2. Convert characters to ASCII code

In Golang, we can use Itoa() provided by the strconv package The function converts characters into ASCII codes. The specific syntax format is as follows:

func Itoa(i int) string

. Among them, the parameter i represents the character to be converted, and the type is int. The return value is the converted ASCII code, the type is string.

The following is a sample code:

package main

import (
    "fmt"
    "strconv"
)

func main() {
    char := 'H'
    ascii := strconv.Itoa(int(char))
    fmt.Println("Char to ASCII code: ", ascii)
}

The output result is:

Char to ASCII code:  72

In the above code, we assign characters to the variable char, Then use the Itoa() function to convert it to ASCII code, and finally print it out through the println() function.

Summary:

In Golang, we can use the Atoi() and Itoa() provided by the strconv package The function converts ASCII codes to characters, or converts characters to ASCII codes. These two functions are very simple and practical, and can easily complete conversions between different types.

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