C# console applications
BASIC PROGRAM 1
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace basicprogramming
{
class Program
{
static void Main(string[] args)
{
int a = 10;
Console.WriteLine("the value of a" +" " + a);
Console.WriteLine("this is my first consol program");
Console.WriteLine("welcome to my program");
Console.ReadKey();//break to output screen
}
}
}
BASIC PROGRAM 2: INPUT FROM USER
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace userinputpro
{
class Program
{
int a;
void accept()
{
Console.WriteLine("enter any number");
a = int.Parse(Console.ReadLine());
Console.WriteLine("the value of a is" + " " + a);
}
static void Main(string[] args)
{
Program p1 = new Program();
p1.accept();
Console.ReadKey();
}
}
}
BASIC PROGRAM 3: USING FUNCTION( )/PARAMETER PASSING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace fun1
{
class Program
{
//create function
int b;
void accept(int a)
{
b = a;
}
void show()
{
Console.WriteLine("the vaue of b is " + " " + b);
}
static void Main(string[] args)
{
//classname object=new classname();
Program p1 = new Program();
//object.functionname()
p1.accept(10);
p1.show();
Console.ReadKey();
}
}
}
BASIC PROGRAM 4: DATA DISPLAY USING FUNCTION( )/PARAMETER PASSING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace data_display_using_function
{
class Program
{
string b,c,d,e,h;
int f,g;
void input1(string name, string city, string state, string subject, int age, int sem, string mobile)
{
b = name;
c = city;
d = state;
e = subject;
g = sem;
h = mobile;
f = age;
if (age > 18)
{
display();
}
else
{
Console.WriteLine("you are not eligible");
}
}
void display()
{
Console.WriteLine("Your name is :" + " " + b);
Console.WriteLine("Your city name is: " + " " + c);
Console.WriteLine("your state name is :" + " " + d);
Console.WriteLine("your subject name is: " + " " + e);
Console.WriteLine("your age is :" + " " + f);
Console.WriteLine("your semester is :" + " " + g);
Console.WriteLine("your mobile number is :" + " " + h);
}
static void Main(string[] args)
{
Program p1 = new Program();
p1.input1("rucha", "Nagpur","Maharashtra","BE",29,5,"8698408800");
Console.ReadKey();
}
}
}
OUTPUT:
Your name is : rucha
Your city name is: Nagpur
your state name is : Maharashtra
your subject name is: BE
your age is : 29
your semester is : 5
your mobile number is : 8698408800
BASIC PROGRAM 5: IF ELSE CONDITION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace studentscholarship
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Enter your name");
string name = Console.ReadLine();
Console.WriteLine("Enter your class");
string class1 = Console.ReadLine();
Console.WriteLine("Enter your semester");
string Sem = Console.ReadLine();
int tottalatt;
Console.WriteLine("Enter your total attendance");
tottalatt = int.Parse(Console.ReadLine());
if (tottalatt > 90)
{
Console.WriteLine("Student name:" + " " + name);
Console.WriteLine("Class:" + " " + class1);
Console.WriteLine("semester:" + " " + Sem);
Console.WriteLine("Total attendance:" + " " + tottalatt);
Console.WriteLine("your scholarship approved");
}
else
{
Console.WriteLine(" Your scholarship not approved");
}
Console.ReadKey();
}
}
}
OUTPUT:
Enter your name
Riya
Enter your class
BE
Enter your semester
VII
Enter your total attendance
91
Student name: Riya
Class: BE
semester: VII
Total attendance: 91
your scholarship approved
BASIC PROGRAM 6: IF ELSE CONDITION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace elseifcon
{
class Program
{
static void Main(string[] args)
{
int per;
Console.WriteLine("Enter your percentage");
per = int.Parse(Console.ReadLine());
if (per > 60)
{
Console.WriteLine("Result:First division");
}
else if (per > 50 && per<60)
{
Console.WriteLine("Result:Second division");
}
else if (per > 40 && per < 50)
{
Console.WriteLine("Result:Third division");
}
else
{
Console.WriteLine("Result:Fail");
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 7: IF ELSE CONDITION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace condition1
{
class Program
{
static void Main(string[] args)
{
int age;
Console.WriteLine("Enter your age");
age = int.Parse(Console.ReadLine());
if (age > 18)
{
Console.WriteLine("you can go");
}
else
{
Console.WriteLine("you cannot go");
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 8: SWITCH CASE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace switch1
{
class Program
{
static void Main(string[] args)
{
int ch;
Console.WriteLine("Enter your choice");
ch = int.Parse(Console.ReadLine());
switch (ch)
{
case 1: Console.WriteLine("you press 1");
break;
case 2: Console.WriteLine("you press 2");
break;
case 3: Console.WriteLine("you press 3");
break;
default: Console.WriteLine("invalid choice");
break;
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 9: LOOPING
WHILE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace while1
{
class Program
{
static void Main(string[] args)
{
int i=0;
while (i <= 10)
{
Console.WriteLine(i);
i++;
}
Console.ReadKey();
}
}
}
DO WHILE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace dowhile1
{
class Program
{
static void Main(string[] args)
{
int i = 1;
do
{
Console.WriteLine(i);
i++;
} while (i <= 10);
Console.ReadKey();
}
}
}
FOR
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace for1
{
class Program
{
static void Main(string[] args)
{
int i;
for (i = 1; i <= 10; i++)
{
Console.WriteLine(i);
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 10: IF ELSE CONDITION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace resultprint
{
class Program
{
static void Main(string[] args)
{
int s1;
Console.WriteLine("Enter marks of Marathi");
s1 = int.Parse(Console.ReadLine());
int s2;
Console.WriteLine("Enter marks of English");
s2 = int.Parse(Console.ReadLine());
int s3;
Console.WriteLine("Enter marks of Science");
s3 = int.Parse(Console.ReadLine());
int s4;
Console.WriteLine("Enter marks of Maths");
s4 = int.Parse(Console.ReadLine());
int s5;
Console.WriteLine("Enter marks of Social science");
s5 = int.Parse(Console.ReadLine());
int total;
total= s1 + s2 + s3 + s4 + s5;
if (total > 200)
{
Console.WriteLine("Marahi:" + " " +s1);
Console.WriteLine("English:" + " " +s2);
Console.WriteLine("Science:" + " " +s3);
Console.WriteLine("Maths:" + " " +s4);
Console.WriteLine("Social science:" + " " + s5);
Console.WriteLine("Total Marks:" + " " +total);
Console.WriteLine("Result remark: A Grade");
}
else
if (total > 150 && total < 200)
{
Console.WriteLine("Marahi:" + " " + s1);
Console.WriteLine("English:" + " " + s2);
Console.WriteLine("Science:" + " " + s3);
Console.WriteLine("Maths:" + " " + s4);
Console.WriteLine("Social science:" + " " + s5);
Console.WriteLine("Total Marks:" + " " + total);
Console.WriteLine("Result remark: B Grade");
}
else
{
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 11: IF ELSE CONDITION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace emplo
{
class employee
{
string name, city;
int sal;
public void accept(string name1,string city1,int sal1)
{
name = name1;
city = city1;
sal = sal1;
display();
}
void display()
{
Console.WriteLine("your name is"+" " + name);
Console.WriteLine("your city is city"+" " + city);
Console.WriteLine("your salary is"+" " + sal);
if (sal > 5000)
{
Console.WriteLine("employee designation: manager");
}
else
{
Console.WriteLine("employee designation: supporting staff");
}
}
}
class Program
{
static void Main(string[] args)
{
string n, c;
int s;
Console.WriteLine("enter your name");
n = Console.ReadLine();
Console.WriteLine("enter your city");
c = Console.ReadLine();
Console.WriteLine("enter your salary");
s = int.Parse(Console.ReadLine());
employee p1 = new employee();
p1.accept(n,c,s);
Console.ReadKey();
}
}
}
BASIC PROGRAM 12: CLASS OBJECT
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace classo
{
//create a user class
class one
{
public void display() //here function() is called as method
{
Console.WriteLine("this is my first class");//console.writeline is a output statement
}
}
class Program
{
static void Main(string[] args)
{
//classname objname=new classname();
one p1 = new one();
//synatx for access method- objname.methodname();method() can appear in list when it decalre as public method(),here public void display() is a method
p1.display();
Console.ReadKey(); //it is used to break output screen.
}
}
}
BASIC PROGRAM 13: CLASS OBJECT PARAMETER PASSING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace calssoparameter
{
class one
{
public void display(int A)// here A is areceiver parameter
{
Console.WriteLine("the value of A is" + " " + A);
}
}
class Program
{
static void Main(string[] args)
{
one p1 = new one();
p1.display(20);//sender parameter
Console.ReadKey();
}
}
}
BASIC PROGRAM 14: CLASS OBJECT PARAMETER
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace classobjprivate
{
class one
{
public void display()
{
Console.WriteLine("this is my first function");
show();
}
void show()
{
Console.WriteLine("this is show function");
}
}
class Program
{
static void Main(string[] args)
{
one p1 = new one();
p1.display();
Console.ReadKey();
}
}
}
BASIC PROGRAM 15: CLASS OBJECT USING STRUCTURE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace struct1
{
class Program
{
struct employee
{
public int eid;
public string name;
};
static void Main(string[] args)
{
//synatx for stucture object
//structre name object name;
employee e1;
Console.WriteLine("enter employee id");
e1.eid = int.Parse(Console.ReadLine());
Console.WriteLine("enter your name");
e1.name = Console.ReadLine();
Console.WriteLine("your employee id is:-" + " " + e1.eid);
Console.WriteLine("your name is:-"+" "+e1.name);
Console.ReadKey();
}
}
}
BASIC PROGRAM 16: CLASS OBJECT USING STRUCTURE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace structstudent
{
class Program
{
struct student
{
public string name;
public string city;
public string state;
public int mark1;
public int mark2;
public int mark3;
public int mark4;
public int mark5;
};
static void Main(string[] args)
{
int total;
student s1;
Console.WriteLine("enter your name");
s1.name = Console.ReadLine();
Console.WriteLine("enter your city");
s1.city = Console.ReadLine();
Console.WriteLine("enter your state");
s1.state = Console.ReadLine();
Console.WriteLine("enter mark1");
s1.mark1 = int.Parse(Console.ReadLine());
Console.WriteLine("enter mark2");
s1.mark2 = int.Parse(Console.ReadLine());
Console.WriteLine("enter mark3");
s1.mark3 = int.Parse(Console.ReadLine());
Console.WriteLine("enter mark4");
s1.mark4 = int.Parse(Console.ReadLine());
Console.WriteLine("enter mark5");
s1.mark5 = int.Parse(Console.ReadLine());
total = s1.mark1 +s1.mark2 + s1.mark3 + s1.mark4 + s1.mark5;
if (total > 500)
{
Console.WriteLine("Mark1:" + " " + s1.mark1);
Console.WriteLine("Mark2:" + " " + s1.mark2);
Console.WriteLine("Mark3:" + " " + s1.mark3);
Console.WriteLine("Mark4:" + " " + s1.mark4);
Console.WriteLine("mark5:" + " " + s1.mark5);
Console.WriteLine("Total Marks:" + " " + total);
Console.WriteLine("Result remark: First division");
}
else
if (total > 300 && total < 500)
{
Console.WriteLine("Mark1:" + " " + s1.mark1);
Console.WriteLine("Mark2:" + " " + s1.mark2);
Console.WriteLine("Mark3:" + " " + s1.mark3);
Console.WriteLine("Mark4:" + " " + s1.mark4);
Console.WriteLine("mark5:" + " " + s1.mark5);
Console.WriteLine("Total Marks:" + " " + total);
Console.WriteLine("Result remark: second division");
}
else
if (total > 200 && total < 300)
{
Console.WriteLine("Mark1:" + " " + s1.mark1);
Console.WriteLine("Mark2:" + " " + s1.mark2);
Console.WriteLine("Mark3:" + " " + s1.mark3);
Console.WriteLine("Mark4:" + " " + s1.mark4);
Console.WriteLine("mark5:" + " " + s1.mark5);
Console.WriteLine("Total Marks:" + " " + total);
Console.WriteLine("Result remark: Third division");
}
else
{
Console.WriteLine("Result remark: Fail");
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 17: CLASS OBJECT USING STRUCTURE & FUNCTION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace funcstruct22
{
class employee
{
string name, city,state;
int sal;
public void accept(string name1, string city1,string state1, int sal1)
{
name = name1;
city = city1;
state = state1;
sal = sal1;
display();
}
void display()
{
Console.WriteLine("your name is" + " " + name);
Console.WriteLine("your city is " + " " + city);
Console.WriteLine("your state is" + " " + state);
Console.WriteLine("your salary is" + " " + sal);
if (sal > 5000)
{
Console.WriteLine("employee designation: manager");
}
else
{
Console.WriteLine("employee designation: supporting staff");
}
}
}
class Program
{
struct emplo
{
public string name;
public string city;
public string state;
public int salary;
};
static void Main(string[] args)
{
emplo e1;
Console.WriteLine("enter your name");
e1.name = Console.ReadLine();
Console.WriteLine("enter your city");
e1.city = Console.ReadLine();
Console.WriteLine("enter your state");
e1.state = Console.ReadLine();
Console.WriteLine("enter your salary");
e1.salary = int.Parse(Console.ReadLine());
employee p1 = new employee();
p1.accept(e1.name,e1.city,e1.state,e1.salary);
Console.ReadKey();
}
}
}
BASIC PROGRAM 18: INHERITANCE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace inheritance1
{
class one
{
public void display()
{
Console.WriteLine("this is my first class");
}
}
class two : one //this is called inheritance
{
public void show()
{
Console.WriteLine("this is class two");
}
}
class three: two
{
public void print()
{
Console.WriteLine("this is third class");
}
}
class Program
{
static void Main(string[] args)
{
// two t1 = new two(); //only last class object createsa
three t1 = new three();
t1.print();
t1.display();
t1.show();
Console.ReadKey();
}
}
}
BASIC PROGRAM 19: ABSTRACT
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace abstractexample
{
abstract class one
{
public void display()
{
Console.WriteLine("this is my display function");
}
}
class two : one //one is an abstract class
{
public void show()
{
Console.WriteLine("this is my second class");
}
}
class Program
{
static void Main(string[] args)
{
two t1 = new two();
t1.display();
t1.show();
Console.ReadKey();
}
}
}
BASIC PROGRAM 20: FUNCTION OVERLOADING
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace funover
{
class one
{
public void display()
{
Console.WriteLine("this is my first program");
}
public void display(int a)
{
Console.WriteLine("the value of a"+" "+a);
}
}
class Program
{
static void Main(string[] args)
{
one o1 = new one();
o1.display();
o1.display(10);
Console.ReadKey();
}
}
}
BASIC PROGRAM 21: INTERFACE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace interface1
{
interface one
{
void display();//declare function
}
class my : one
{
public void display()
{
Console.WriteLine("this is my first display");
}
}
class Program
{
static void Main(string[] args)
{
//create object
my m1 = new my();
m1.display();
Console.ReadKey();
}
}
}
BASIC PROGRAM 22: MULTIPLE INHERITANCE
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace multiple_inheritance_using_multiple_interface
{
interface one
{
void display();//declare function
}
interface two
{
void show();
}
class my : one, two //this is multiple inheritance using multiple interface
{
public void display()
{
Console.WriteLine("this is my first display");
}
public void show()
{
Console.WriteLine("this is my show function");
}
}
class Program
{
static void Main(string[] args)
{
//create object
my m1 = new my();
m1.display();
m1.show();
Console.ReadKey();
}
}
}
BASIC PROGRAM 23:TRY ,CATCH & FINALLY
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace exception_try_cacth_finally
{
class Program
{
static void Main(string[] args)
{
int a = 10, b = 0, c;
try
{
c = a / b;
Console.WriteLine(c);
}
catch (Exception e1) //e1 is a exception object return in error
{
Console.WriteLine(e1);
}
finally
{
Console.WriteLine("this is my try catch program");
}
Console.ReadKey();
}
}
}
BASIC PROGRAM 24:ABSTRACTION
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace salaryabstract
{
abstract class employee
{
public void accept()
{
int sal;
Console.WriteLine("enter your salary");
sal = int.Parse(Console.ReadLine());
Console.WriteLine("your salary is:-" + " " + sal);
}
}
class HR : employee
{
string name, department, designation, email, mobile;
public void input()
{
Console.WriteLine("Name :-" + " " + name);
Console.WriteLine("Name :-" + " " + department);
Console.WriteLine("Name :-" + " " + designation);
Console.WriteLine("Name :-" + " " + email);
Console.WriteLine("Name :-" + " " + mobile);
}
public void display()
{
}
}
class Program
{
static void Main(string[] args)
{
string n, d, ds, e, m;
Console.WriteLine("enter your name");
n = Console.ReadLine();
Console.WriteLine("enter your department");
d = Console.ReadLine();
Console.WriteLine("enter your designation");
ds = Console.ReadLine();
Console.WriteLine("enter your email");
e = Console.ReadLine();
Console.WriteLine("enter your mobile");
m = Console.ReadLine();
HR h1 = new HR();
h1.accept();
h1.input(n,d,"ds",e,m);
h1.display();
Console.ReadKey();
}
}
}
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