Converting string to float - strconv, ParseFloat

---

examples/convert-string-to-float/convert_string_to_float.go

package main

import (
    "fmt"
    "strconv"
)

func main() {
    var f float64
    var err error

    f, err = strconv.ParseFloat("4.2", 64)
    if err == nil {
        fmt.Printf("%v %T\n", f, f) // 4.2 float64
    } else {
        fmt.Println(err)
    }
}

4.2 float64