Type Conversion

Type casting/ Type conversion is the process of converting the value of one data type (integer, float, string ) to another data type

Convert String to Number

1. String to int

func Atoi(str string) (int, error)

import "strconv"

s := "123"
i, err := strconv.Atoi(s)
if err != nil {
    // handle error
}
fmt.Println(i) // Output: 123

2. String to int64

s := "1234567890"
i64, err := strconv.ParseInt(s, 10, 64)
if err != nil {
    // handle error
}
fmt.Println(i64)

3. String to float64

s := "3.14"
f, err := strconv.ParseFloat(s, 64)
if err != nil {
    // handle error
}
fmt.Println(f) // Output: 3.14

Convert Number to String

1. int to String

i := 123
s := strconv.Itoa(i)
fmt.Println(s) // Output: "123"