如何将前导0加到int变量中

number = 42
width = 5
formatted_number = f"{number:0{width}d}"
print(formatted_number)  # 输出: 00042

let number = 42;
let width = 5;
let formattedNumber = number.toString().padStart(width, '0');
console.log(formattedNumber);  // 输出: 00042

int number = 42;
int width = 5;
String formattedNumber = String.format("%0" + width + "d", number);
System.out.println(formattedNumber);  // 输出: 00042

int number = 42;
int width = 5;
string formattedNumber = number.ToString("D" + width);
Console.WriteLine(formattedNumber);  // 输出: 00042

$number = 42;
$width = 5;
$formattedNumber = sprintf("%0" . $width . "d", $number);
echo $formattedNumber;  // 输出: 00042