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Numbers

Output

Zero pad a number

Given the number 42, pad it to 8 characters like 00000042

ruby

42.to_s.rjust(8,"0")

ruby

"%08d" % 42

java

String formatted = new DecimalFormat("00000000").format(42);

java 1.5 or later

String formatted = String.format("%08d", 42);

perl

sprintf("%08d", 42);

groovy

formatted = new DecimalFormat('00000000').format(42)

groovy

formatted = 42.toString().padLeft(8, '0')

groovy

// to stdout
printf "%08d\n", 42
// to a string
formatted = sprintf("%08d", 42)

groovy

formatted = String.format("%08d", 42)

scala

val formatted = String.format("%08d", int2Integer(42))

scala

printf("%08d\n", 42)

python

"%08d" % 42

cpp C++/CLI .NET 2.0

String^ formatted = Convert::ToString(42)->PadLeft(8, '0');

cpp C++/CLI .NET 2.0

String^ formatted = String::Format("{0,8:D8}", 42);

cpp

std::printf("%08d", 42);

cpp

std::ostringstream os;
os << std::setw(8) << std::setfill('0') << 42 << std::ends;
std::cout << os.str() << std::endl;

cpp

std::cout << boost::format("%|08|") % 42 << std::endl;

fsharp

printfn "%08d" 42

fsharp

let formatted = sprintf "%08d" 42
printfn "%s" formatted

fsharp

let buffer = new StringBuilder()
Printf.bprintf buffer "%08d" 42
printfn "%s" (buffer.ToString())

fsharp

let formatted = String.Format("{0,8:D8}", 42)
Console.WriteLine(formatted)

fsharp

let formatted = Convert.ToString(42).PadLeft(8, '0')
Console.WriteLine(formatted)

erlang

Formatted = io_lib:format("~8..0B", [42]),

erlang

io:format("~8..0B~n", [42]).

ocaml

Printf.printf "%08d" 42;;

ocaml

let s = Printf.sprintf "%08d" 42 in
print_string s;;

csharp

string.Format("{0,8:D8}", 42);

php

echo str_pad(42, 8, 0, STR_PAD_LEFT);

php

printf("%08d", 42);

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