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Golang program to get the index of a specified character in the specified string

Here, we are going to learn how to get the index of a specified character in the specified string in Golang (Go Language)?
Submitted by Nidhi, on March 18, 2021 [Last updated : March 03, 2023]

Finding the index of a character in given string in Golang

Problem Solution:

In this program, we will three strings. Here, we will get the index of a specified character in a specified string using strings.IndexByte() function.

Program/Source Code:

The source code to get the index of the specified character in the specified string is given below. The given program is compiled and executed successfully.

Golang code to find the index of a specified character in the given string

// Golang program to get the index of
// specified character in specified string

package main

import "fmt"
import "strings"

func main() {
	str1 := "INDIA"
	str2 := "AUSTRALIA"
	str3 := "USA"

	fmt.Println(strings.IndexByte(str1, 'I'))
	fmt.Println(strings.IndexByte(str2, 'T'))
	fmt.Println(strings.IndexByte(str3, 'K'))
}

Output:

0
3
-1

Explanation:

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt package that includes the files of package fmt then we can use a function related to the fmt package.

In the main() function, we created three string variables str1, str2, str3. After that, we used strings.IndexByte() function to get the index of a specified character in the specified string. The strings.IndexByte() function return the integer value. If the specified character is not found in the string then it will return -1.

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