Composite formatting

Composite format strings combines variable substitution with format strings.


using System;
using System.Text;
using System.Globalization;
class Sample
{
    public static void Main()
    {
        string composite = "Credit={0:C}";
        Console.WriteLine(string.Format(composite, 500));  // Credit=$500.00

    }
}

The output:


Credit=$500.00

The Console class overloads its Write and WriteLine methods to accept composite format strings.


using System;
using System.Text;
using System.Globalization;
class Sample
{
    public static void Main()
    {
        Console.WriteLine("Credit={0:C}", 500);  // Credit=$500.00

    }
}

The output:


Credit=$500.00
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