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C# Preprocessor Directives Assignment Help
PREPROCESSOR DIRECTIVES
- It’s a directive which provides step by step procedure to preprocess the information to the compiler prior to the actual compilation starts.
- All pre-processors begin with # symbol
- A pre-processor directive does not end with a semicolon (;).
- C# language compiler does not have a its separate preprocessor
- In C# the preprocessor directives are used to help in provisional compilation and they are not used to create macros.
- The only instruction on a line is a pre-processor directive
C# Preprocessor Directives Assignment Help By Online Tutoring and Guided Sessions from assignmenthippo.com
The lists of preprocessor directives in C#
#define
#undef
#if
#else
#elif
#elif
#line
#error
#warning
#region
#endregion
Example: The #define Pre-processor
The #define pre-processor directive creates symbolic literals.
Syntax
#define symbol
The following program demonstrates the usage of #define directives
#define P
using System;
namespace Preprocessor
{
classNameProgram
{
static void Main(string[] args)
{
#if (P)
Console.WriteLine("P is defined");
#else
Console.WriteLine("P is not defined");
#endif
Console.ReadKey();
}
}
}
Output: P is defined
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