In this c# basic programs we give the information about basic C# programs like addition of two numbers, to find odd/even number program etc. with their output.

c# basic programs:

// 1. Write a program to display We-Come massage using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

Console.WriteLine(“Wel-Come to C# Programming”);

Console.ReadLine();

}

}

}

O/P:-

Wel-Come to C# Programming

// 2. Write a program to display addition of 2 numbers using C#. (Compile time values)

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int a = 10, b = 5, sum = 0;

Console.WriteLine(“C# Programming”);

sum = a + b;

Console.WriteLine(“A + B = “+sum);

Console.ReadLine();

}

}

}

O/P:-

C# Programming

A + B = 15

// 3. Write a program to display addition of 2 numbers using C#. (Run time values)

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int a , b, sum = 0;

Console.WriteLine(“C# Programming”);

Console.Write(“Enter the First number: “);

a = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the Second number: “);

b = Convert.ToInt32(Console.ReadLine());

sum = a + b;

Console.WriteLine(“A + B = “+sum);

Console.ReadLine();

}

}

}

O/P:-

C# Programming

Enter the First number: 2

Enter the Second number: 5

A + B = 7

// 4. Write a program to display Area of Rectangle numbers using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int l , b, area = 0;

//Console.WriteLine(“C# Programming”);

Console.Write(“Enter the length of rectangle: “);

l = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the breadth of rectangle: “);

b = Convert.ToInt32(Console.ReadLine());

area = l*b;

Console.WriteLine(“Area of rectangle = “+area);

Console.ReadLine();

}

}

}

O/P:-

Enter the length of rectangle: 10

Enter the breadth of rectangle: 6

Area of rectangle = 60

c# basic programs:

// 5. Write a program to display Area of Circle numbers using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

double r, area=0;

//Console.WriteLine(“C# Programming”);

Console.Write(“Enter the radious of Circle: “);

r = Convert.ToDouble(Console.ReadLine());

area = (float)3.142*r*r;

Console.WriteLine(“Area of Circle = “+area);

Console.ReadLine();

}

}

}

O/P:-

Enter the radious of Circle: 1.0

Area of Circle = 3.14199995994568

// 6. Write a program to display swapping 2 numbers using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int a, b, t = 0;

Console.Write(“Enter the 1st number: “);

a = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the 2nd number: “);

b = Convert.ToInt32(Console.ReadLine());

Console.WriteLine(“Before Swap: “);

Console.WriteLine(“A: “+a);

Console.WriteLine(“B “+b);

t = a;

a = b;

b = t;

Console.WriteLine(“After Swap: “);

Console.WriteLine(“A: “+a);

Console.WriteLine(“B: “+b);

Console.ReadLine();

}

}

}

O/P:-

Enter the 1st number: 10

Enter the 2nd number: 20

Before Swap:

A: 10

B: 20

After Swap:

A: 20

B: 10

// 7. Write a program to display even no and odd no using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int n;

Console.Write(“Enter the number: “);

n = Convert.ToInt32(Console.ReadLine());

if (n % 2 == 0)

Console.WriteLine(n + ” is Even number”);

else

Console.WriteLine(n + ” is Odd number”);

Console.ReadLine();

}

}

}

O/P:-

Enter the number: 10

10 is Even number

c# basic programs:

// 8. Write a program to demonstrate parameter passing mechanism and out parameter.

// Call by Value

using System;

namespace CSharpMethod

{

class MethodParaFormalValue

{

private static void Main(string[] args)

{

int value = 500;

Console.WriteLine(“Before Method Execution, value={0}”, value);

ChangePara(value);

Console.WriteLine(“After Method Execution, value={0}”, value);

Console.ReadLine();

}

static void ChangePara(int value)

{

value = 600;

Console.WriteLine(” Definition Value=” + value);

}

}

}

O/P:-

Before Method Execution, value=500

Definition Value=600

After Method Execution, value=500

// Call by Reference

using System;

namespace CSharpMethod

{

class MethodParaFormalValue

{

private static void Main(string[] args)

{

int value = 500;

Console.WriteLine(“Before Method Execution, value={0}”, value);

ChangePara(ref value);

Console.WriteLine(“After Method Execution, value={0}”, value);

Console.ReadLine();

}

static void ChangePara(ref int value)

{

value = 600;

}

}

}

O/P:-

Before Method Execution, value=500

After Method Execution, value=600

// OUT Parameter

using System;

namespace OutParaMethed
{
class Program
{
static void Main(string[] args)
{
int i = 5;
Program obj = new Program();
Console.WriteLine(“Before calling function value of i: “+i);
obj.mul(out i);
Console.WriteLine(“After calling function value of i: ” + i);
Console.ReadKey();

}
public void mul( out int i)
{

i = 2;
i = i + 10;
}

}
}

O/P:

Before calling functions value of i: 5
After calling function value of i: 12

c# basic programs:

//9. Write a program to demonstrate type casting

// Implicit Type Conversion

using System;

namespace TypeCasting

{

class Program

{

// Main Method

public static void Main(String []args)

{

int i = 150;

// automatic type conversion

long l = i;

// automatic type conversion

float f = l;

// Display Result

Console.WriteLine(“Int value ”  +i);

Console.WriteLine(“Long value ”  +l);

Console.WriteLine(“Float value ”  +f);

Console.ReadLine();

}

}

}

O/P:-

Int value 150

Long value 150

Float value 150

// Explicit Type Conversion

using System;

namespace TypeConversion

{

class ExplicitConversion

{

static void Main(string[] args)

{

double d = 321.55;

int i;

// cast double to int.

i = (int)d;

Console.WriteLine(i);

Console.ReadKey();

}

}

}

O/P:-

321

// 10. Write a program to demonstrate partial class.

//File Name: Program.cs

using System;

namespace PartialClass

{

class Program

{

static void Main(string[] args)

{

oddeven myRecord = new oddeven();

myRecord.getRecord();

myRecord.display();

Console.ReadLine();

}

}

}

//File Name: Class1.cs

using System;

namespace PartialClass

{

public partial class oddeven

{

int n;

public void getRecord()

{

Console.WriteLine(“Enter the number: “);

n = Convert.ToInt32(Console.ReadLine());

}

}

}

//File Name: Class2.cs

using System;

namespace PartialClass

{

public partial class oddeven

{

public void display()

{

if(n % 2 ==0)

Console.WriteLine(n+” is Even number”);

else

Console.WriteLine(n + ” is Odd number”);

}

}

}

O/P:-

Enter the number:

89

89 is Odd number

c# basic programs:

// 11. Write a program to display largest number among 2 numbers using C#

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int x,y;

Console.Write(“Enter the first number: “);

x = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the second number: “);

y = Convert.ToInt32(Console.ReadLine());

if (x > y)

{

Console.WriteLine(x + ” is largest number”);

}

else

if (y > x)

{

Console.WriteLine(y + ” is largest number”);

}

else

{

Console.WriteLine(x + ” Both are equal”);

}

Console.ReadLine();

}

}

}

O/P:-

Enter the first number: 18

Enter the second number: 23

23 is largest number

// 12. Write a program to display largest number among 3 different numbers using C#

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int x,y,z;

Console.Write(“Enter the first number: “);

x = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the second number: “);

y = Convert.ToInt32(Console.ReadLine());

Console.Write(“Enter the third number: “);

z = Convert.ToInt32(Console.ReadLine());

if (x > y && x > z)

{

Console.WriteLine(x + ” is largest number”);

}

else

if (y > z)

{

Console.WriteLine(y + ” is largest number”);

}

else

{

Console.WriteLine(z + ” is largest number”);

}

Console.ReadLine();

}

}

}

O/P:-

Enter the first number: 10

Enter the second number: 20

Enter the third number: 30

30 is largest number

// 13. Write a program to display given number is +ve or -ve or natural using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int x;

Console.Write(“Enter the first number: “);

x = Convert.ToInt32(Console.ReadLine());

if (x > 0)

{

Console.WriteLine(x + ” is +ve number.”);

}

else

if(x<0)

{

Console.WriteLine(x + ” is -ve number.”);

}

else

{

Console.WriteLine(x + ” is nutral.”);

}

Console.ReadLine();

}

}

}

O/P:-

Enter the first number: 100

100 is +ve number.

// 14. Write a program to display given year is leap year or not using C#.

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int year;

Console.Write(“Enter the year: “);

year = Convert.ToInt32(Console.ReadLine());

if (year % 4 == 0 || year % 400 == 0)

{

Console.WriteLine(year + ” is leap year.”);

}

else

if (year % 100 == 0 || year % 4 != 0)

{

Console.WriteLine(year + ” is not leap year.”);

}

Console.ReadLine();

}

}

}

O/P:-

Enter the year: 2024

2024 is leap year.

// 15. Write a C# program to give 3 subject marks and show total, percentage and grade

using System;

namespace BasicConsoleApplication

{

class Addition

{

static void Main(string[] args)

{

int c, cpp, java, tot = 0;

double per = 0;

Console.WriteLine(“Enter the 3 subject Mraks: “);

c = Convert.ToInt32(Console.ReadLine());

cpp = Convert.ToInt32(Console.ReadLine());

java = Convert.ToInt32(Console.ReadLine());

tot = c + cpp + java;

per = (double)tot / 3;

Console.WriteLine(“C Prog. Marks: ” + c);

Console.WriteLine(“Cpp Prog. Marks: ” + cpp);

Console.WriteLine(“Java Prog. Marks: ” + java);

Console.WriteLine(“Total Marks: ” + tot);

Console.WriteLine(“Percentage : ” + per);

if (per >= 40 && per < 50)

{

Console.WriteLine(“Gread: C”);

}

else

if (per >= 50 && per < 60)

{

Console.WriteLine(“Gread: B”);

}

else

if (per >= 60 && per < 70)

{

Console.WriteLine(“Gread: A”);

}

else

if (per >= 70 && per < 80)

{

Console.WriteLine(“Gread: A+”);

}

else

if (per >=80 && per < 100)

{

Console.WriteLine(“Gread: O”);

}

Console.ReadLine();

}

}

}

O/P:-

Enter the 3 subject Marks:

67

80

90

C Prog. Marks: 67

Cpp Prog. Marks: 80

Java Prog. Marks: 90

Total Marks: 237

Percentage : 79

Gread: A+

Some More: 

POP- Introduction to Programming Using ‘C’

DS – Data structure Using C

OOP – Object Oriented Programming 

Java Programming

DBMS – Database Management System

RDBMS – Relational Database Management System

Join Now: Data Warehousing and Data Mining 

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