# 
#  The `IndexByte()` method

The **`IndexByte()` method** returns the index of first occurrence of the input byte in a given string. 

The **`strings` package** is a Go standard library package that contains functions to manipulate UTF-8 encoded strings.

#  
#  
##  Syntax
```
func IndexByte(s string, c byte) int
```
##     
##     
### Arguments
This method takes a string `s` and a byte `c` as inputs.

## 
###
### Return value
- This method returns the index of the first occurrence of the byte `c` in the input string `s`.

-  If the byte `c` does not exist in `s`, then it returns `-1`.

#  
## Code 
First, we imported the ```fmt``` and ```strings``` package to our program in the code below:

package main

import (
	"fmt"
	"strings"
)

func main() {
	str1 := "educative.io"
	fmt.Println("String : ", str1)
	index1 :=  strings.IndexByte(str1, 'c')
	index2 :=  strings.IndexByte(str1, 'z')
	fmt.Println("byte : 'c',", "Index : ", index1)
	fmt.Println("byte : 'z',", "Index : ", index2)
}

#  
## Explanation
- After importing `fmt`, we call the `IndexByte()` method with `"educative.io"` as the input string and byte `'c'` to search and get the index. This returns `3`, as `'c'` is present at index `3` in the input string `"eductive.io"`.

- We again call the `Index()` method with `"educative.io"` as the input string and `'z'` as the byte to search and get the index. This returns `-1`, because `'z'` is not present in the input string `"eductive.io"`.

- We show the output of all these operations using the `Println()` method of the `fmt` package.


What is strings.IndexByte() in Go?

IndexByte() returns the first occurrence index of a byte in a string, or -1 if absent.

What is strings.IndexByte() in Go?

The IndexByte() method

Syntax

Arguments

Return value

Code

Explanation

The `IndexByte()` method