• Scala

val s = i.toString

• Ada

S : String := Integer'Image (I);

• C

char s[0x1000]={};
itoa(i,s,10);

• Clojure

(let [s (str i)])

• C++

auto s = std::to_string(i);

• C#

string s = i.ToString()

• D

string s = i.to!string;

• Dart

var s = "$i";

• Elixir

s = Integer.to_string(i)

• Elixir

s = "#{i}"

• Elixir

s = to_string(i)

• Erlang

S = integer_to_list(I).

• Fortran

  write (unit=s,fmt=*) i

• Go

s := strconv.Itoa(i)

• Go

s := strconv.FormatInt(i, 10)

• Go

s := fmt.Sprintf("%d", i)

• Groovy

def s = "$i".toString()

• Haskell

let s = show i

• JS

var s = i.toString();

• JS

var s = i + "";

• Java

String s = "%d".formatted(i);

• Java

String s=((Integer)i).toString();

• Java

String s = "" + i;

• Java

String s = Integer.toString(i);

• Java

String s = String.valueOf(i);

• Java

String s = "";
while (i != 0) {
    s = i % 10 + s;
    i = i / 10;
}

• Kotlin

val s = i.toString()

• Lisp

(setf s (princ-to-string i))

• Lua

s = tostring(i)

• Obj-C

NSString *s=@(i).description;

• PHP

$s = "{$i}";

• PHP

$s = (string)$i;

• PHP

$s = strval($i);

• PHP

$s = "$i";

• Pascal

var
  _s: String;
  _i: Integer;
begin
  _s := IntToStr(_i);
end.

• Pascal

Str(i,s);

• Perl

$s = "$i";

• Perl

my $s = "" . $i;

• Python

s = str(i)

• Ruby

s = i.to_s

• Rust

let s = i.to_string();

• Rust

let s = format!("{}", i);

• Scheme

(define s (number->string i))

• Smalltalk

s := i asString.

• VB

Dim myInt As Integer = 12345
Console.WriteLine(myInt.ToString)