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Compiler Error CS0818

Visual Studio 2008

Implicitly typed locals must be initialized

An implicitly typed local variable must be initialized with a value at the same time that it is declared.

To correct this error

  • Assign a value to the variable or else give it an explicit type.

The following code generates CS0818:

// cs0818.cs
class A
    public static int Main()
        var a; // CS0818
        return -1;

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