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Golang program to convert a 64-bit float value to a hexadecimal string and scientific notation string

Here, we are going to learn how to convert a 64-bit float value to a hexadecimal string and scientific notation string in Golang (Go Language)?
Submitted by Nidhi, on April 21, 2021 [Last updated : March 05, 2023]

How to convert a 64-bit float value to a hexadecimal string and scientific notation string in Golang?

Problem Solution:

Here, we will convert the value of the 64bit float variable into hexadecimal and scientific notation string using strconv.FormatFloat() function and print the result on the console screen.

Program/Source Code:

The source code to convert a 64-bit float value to a hexadecimal string and scientific notation string is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

Golang code to convert a 64-bit float value to a hexadecimal string and scientific notation string

// Golang program to convert 64-bit float value to
// a hexadecimal string and scientific notation string

package main

import "fmt"
import "strconv"

func main() {
	var val float64 = 123.45
	var str string

	//Convert float value into hex string.
	str = strconv.FormatFloat(val, 'X', -1, 64)
	fmt.Println(str)

	//Convert float value into string in scientific notation.
	str = strconv.FormatFloat(val, 'E', -1, 64)
	fmt.Println(str)
}

Output:

0X1.EDCCCCCCCCCCDP+06
1.2345E+02

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", "strconv" packages then we can use a function related to imported packages.

In the main() function, we created a 64bit float variable and one string variable. Then we converted the value of float variable into hexadecimal and scientific notation string using strconv.FormatUint() and assigned to str variable one by one and print result on the console screen.

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