return type of main method

C# Introduction

C# Version Hisotry C# Language Features Installing Visual Studio C# Basic Project Structure Hello Wolrd, first C# program

Methods/Functions and parameters

C# Method or Function C# Method Parameters and Arguments C# Method Overloading C# Return Statements C# Static vs. Instance Methods C# Method Modifiers C# Method Signatures and Naming Conventions C# Function Documentation and Comments C# Value Type Parameters C# Ref Type Parameters Difference between Value and Ref Type C# Out Parameters Difference between Ref and out parameters C# Optional parameters Are Nullable types reference types in C#"

C# String Basics C# String Manipulation C# String Formatting C# String Comparison and Searching C# StringBuilder Class C# Regular Expressions C# Unicode and Encoding C# String Parsing and Conversion Difference between "string" and "String"C# String Escape Sequence C# Mutable and Immutable Concept Prove that string is immutable String value stored in memory Difference between string and stringbuilder Override the tostring() method

Enums or Enumerations

Enum/enumeration in C#Can you inherit enum in C#?Convert enum to string Convert enum to list in C#Cast int value to enum in C#Get int value from enum in C#Convert string to enum in C#Usage of enum in switch case statement Loop through all enum values Use tilde(~) with Enum

Main() method in C#

Main() method basics in C#More than one "Main()" method in C#Static Main() method in C#Overload Main() method in C#Override Main() method in C#Access modifiers of Main() method in C#Non-static method in C#Main() method arguments and return type async Main() method in C#Class without Main() method in C#Main() method rules in C#

Recursion in C#Base condition in recursion in C#Recursive Algorithms in C#Tree traversal using recursion in C#Stack overflow error in recursion Back tracking using recursion Indirect recursion in C#Recursive data structures in C#Tail Recursion in C#Recursive problem solving Recursion vs Iteration

File Handling in C#

C# File and File Info C# StreamReader and StreamWriter C# FileStream and BinaryReader/BinaryWriter C# Directory and DirectoryInfo Classes C# File Paths C# File and Directory Operations C# File Exceptions and Error Handling C# File Serialization and Deserialization C# File System Watcher

What is array?Single dimension array Multi dimension array Jagged array Param array Array with multi data types Different data types from object array Array with non-default values Array methods and properties Array manipulation techniques Array sorting algorithms Array Searching algorithms(linear, binary search)Array finding maximum and minimum Array of Reference Types

C# Generics C# Generic Constraints

C# ArrayList C# Array vs ArrayList C# List C# SortedList C# Dictionary C# Hashtable C# Dictionary vs Hashtable C# HashSet C# Hashtable vs HashSet C# Stack C# Queue

C# IEnumerable C# IEnumerator C# ICollection C# IList C# IDictionary C# IDisposable C# IComparable C# IEquatable C# ICloneable C# IQueryable C# INotifyPropertyChanged C# INotifyCollectionChanged C# IFormattable C# IAsyncResult C# IComparer C# IEqualityComparer C# IHttpHandler C# IHttpModule

C# Events & Delegates

C# Delegates C# Single-Cast Delegate C# Multi-Cast Delegate C# Generic Delegates C# Func Delegate C# Action Delegate C# Predicate Delegate C# Anonymous Methods C# Events Difference Between Event & Delegate Difference Between Interface & Delegate C# Covariance and Contravariance

Can main() method take an argument other than string array()?

No, the 'Main' method in C# can only take a string array ('string[]') as its argument and nothing else. The purpose of this argument is to receive command-line arguments that are passed to the application when it is run.

The signature of the 'Main' method must be one of the following:



static void Main()
{
    // Method body
}

or



static void Main(string[] args)
{
    // Method body
}

In the second signature, the 'args' parameter represents an array of strings ('string[]') that holds the command-line arguments.

It is important to note that the 'Main' method cannot have any other parameters or different parameter types. Attempting to define a 'Main' method with a different parameter will result in a compilation error.

Can we change return type of 'Main' method in C#?

In C#, the return type of the 'Main' method is restricted to 'void' or 'int'. These are the only valid return types allowed for the 'Main' method.

If you want to specify an exit code for your application, you can use int as the return type of the 'Main' method. The exit code represents the status of the application's execution and can be used to communicate information to the operating system or calling process.

Here are the two valid signatures for the 'Main' method in C#:



static void Main()
{
    // Method body
}

or



static int Main()
{
    // Method body

    return exitCode;
}

In the second signature, the 'Main' method returns an 'int' value that represents the exit code. By convention, a return value of '0' indicates successful execution, while a non-zero value indicates an error or exceptional condition.

It's important to note that changing the return type of the 'Main' method to any other type will result in a compilation error. The runtime expects the 'Main' method to have either 'void' or 'int' as the return type.