Float in Go

In Go, float numbers are used to represent decimal or fractional numbers. Go supports two float data types: float32 and float64.

Here are some examples of how to use float numbers in Go:

Example 1: Declaring a float32 variable named "num1" and assigning a value to it.

var num1 float32 = 3.14159
fmt.Println(num1)

Output: 3.14159

Example 2: Declaring a float64 variable named "num2" and assigning a value to it.

var num2 float64 = 2.71828
fmt.Println(num2)

Output: 2.71828

Example 3: Calculating the area of a circle with radius 2.5 using float64 data type.

package main
import (

    "fmt"

    "math"

)
func main() {

    var radius float64 = 2.5 // declare and assign a float64 value to radius

    var area float64 = math.Pi * radius * radius // calculate the area of the circle

    fmt.Printf("The area of the circle is %.2f\n", area) // print the area with 2 decimal places

}

Output: The area of the circle is 19.63

In Go, it is important to use the appropriate float data type depending on the level of precision required. For most cases, float64 would suffice.