How to read a single byte from a bufio.Reader in Go?

To read a single byte from a bufio.Reader in Go, you can use the ReadByte() function. Here's an example:

package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	file, err := os.Open("example.txt")
	if err != nil {
		fmt.Println("Error opening file:", err)
		return
	}
	defer file.Close()

	reader := bufio.NewReader(file)

	// Read a single byte
	b, err := reader.ReadByte()
	if err != nil {
		fmt.Println("Error reading byte:", err)
		return
	}

	fmt.Printf("Byte read: %c\n", b)
}

In this example, we open a file "example.txt" and create a bufio.Reader to read from it. We then use the ReadByte() function to read a single byte from the file. The ReadByte() function returns a byte and an error. If there is an error, we print an error message and return. Otherwise, we print the byte read using the fmt.Printf() function.