bool and string

Learn boolean and text types.

bool and string

A bool can only be true or false; it is the result of comparisons. A string is text inside double quotes.

aktif := true
ad := "Ada"
yetiskin := 20 >= 18   // true
fmt.Println(aktif, ad, yetiskin)

Logical operators: && (and), || (or), ! (not).

String operations

Strings are joined with + and their byte length is taken with len. Backticks (`...`) write a raw string: \n inside isn't treated as an escape, and it can span several lines.

selam := "Merhaba " + "Go"
fmt.Println(selam, len(selam))  // Merhaba Go 10
yol := `C:\dosyalar\yeni`

Strings in Go are immutable; joining always produces a new string.

Exercise Adult check

Declare ad := "Ada" and yas := 20. Compute yetiskin := yas >= 18 and print fmt.Println(ad + " yetişkin:", yetiskin).

Show example solution

package main

import "fmt"

func main() {
    ad := "Ada"
    yas := 20
    yetiskin := yas >= 18
    fmt.Println(ad+" yetişkin:", yetiskin)
}

Test yourself

What is the result of <code>true && !false</code>?
- false
- An error
- 1
- true
Show answer

true — !false becomes true; true && true gives true.

The and operator

girisYapabilir := kayitli ____ sifreDogru

Show answer

girisYapabilir := kayitli && sifreDogru

Expression and result

5 > 3

true
!true

false
"a" + "b"

"ab"
len("Go")

2

Next lesson: byte and rune

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