C# Signatures:

// When calling with 1 arg
[DllImport("msvcrt.Dll", CallingConvention=CallingConvention.Cdecl)]
static extern int sprintf([In,Out]StringBuilder buffer, String fmt,
    String arg1);

// When calling with 2 args
[DllImport("msvcrt.Dll", CallingConvention=CallingConvention.Cdecl)]
static extern int sprintf([In,Out]StringBuilder buffer, String fmt,
    String arg1, String arg2);

// When calling with 3 args
[DllImport("msvcrt.Dll", CallingConvention=CallingConvention.Cdecl)]
static extern int sprintf([In,Out]StringBuilder buffer, String fmt,
    String arg1, String arg2, String arg3);

VB Signature:

Declare Function sprintf Lib "msvcrt.dll" (TODO) As TODO

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

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Sample Code:

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Alternative Managed API:

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System.String.Format()

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