int i = 10; Console.WriteLine(POut.String(i, "%d")); // Output: 10
double d = 10.12; Console.WriteLine(POut.String(d, "%.2f")); // Output: 10.12
string s = "hello"; Console.WriteLine(POut.String(s, "%10s")); // Output: helloIn this example, the output string is padded with spaces to align it to a width of 10 characters using the `%10s` format specifier. Package Library: This library is a part of the System namespace in the .NET framework, so it doesn't require any external packages or libraries.