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« Literal suffix
Type conversion for predefined types »
 

Default literal

The literal for real number is default to double.

Therefore you have to add F suffix when initializing a float type variable.

Otherwise the C# compiler will generate error message.


using System;

class Program
{
    static void Main(string[] args)
    {
        float f = 1.1;
        Console.WriteLine(f);

    }
}

The code above generates the following error message:


C:\g>csc Program.cs
Microsoft (R) Visual C# 2010 Compiler version 4.0.30319.1
Copyright (C) Microsoft Corporation. All rights reserved.

Program.cs(7,19): error CS0664: Literal of type double cannot be implicitly
        converted to type 'float'; use an 'F' suffix to create a literal of this type

The same rule applies to decimal type literal.

« Literal suffix
Type conversion for predefined types »
 
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