Notes

Qs 1
static void Main(string[] args)
{
Console.WriteLine("enter first name");
string fname = Console.ReadLine();
Console.WriteLine("enter last name");
string lname = Console.ReadLine();
Console.WriteLine(lname+ " " +fname);
}
Qs 2
public static void Main(string[] args)
{
Console.WriteLine("Enter string");
string s = Console.ReadLine();
string re = "";
for (int i= s.Length-1; i>=0; i--)
{
re = re + s[i];
}
if (s == re)
Console.WriteLine("Palindrome");
else
Console.WriteLine("not palindrome");
}

Q3
static void Main(string[] args)
{
System.Console.WriteLine("Enter number");
string s = Console.ReadLine();
string p = "";
for(int i=0; i<3; i++)
{

p= p+(s[i]);


}
p = p + " ";
for(int i=3; i<s.Length; i++)
{
p = p + s[i];
}
Console.Write(p);

}

Q4

static void Main(string[] args)
{

int[] arr = {1,2,3,4,5};

for(int i =0 ; i < 5; i++)
{
Console.Write(arr[i] * arr[i]+" ");

}
}



02/02/23
Qs 1
public static void Main()
{
string[] arr = new string[] { "0", "true", "1", "2", "null", "3", "void" };
for (int i = 0; i < 7; i++)
{

String s = arr[i];
bool isnum = true;
for (int j = 0; j < s.Length; j++)
{
if (s[j] > ''0' && s[j]<='9'')
{
continue;

}
else
isnum = false;
}
}


}
if(isnum==true)
Console.WriteLine(s);

}
Qs 2
public static void Main()
{
int i, j;
int[] arr = new int[] { 1, 2, 3, 3, 4, 2, 5};
for ( i = 0; i < 7; i++)
{
for ( j = i+1; j < 7; j++)
{

if (arr[i] == arr[j])
p = i;
{
Console.WriteLine(arr[i] + " ");
}
}


}
}

Qs 3
public static void Main()
{
int[] arr = new int[] { 1, 2, 4 };
int[] arr2 = new int[] { 1, 2, 3 };
bool j = true;
if (arr.Length == arr2.Length)
{
for (int i = 0; i < 3; i++)
{
if (arr[i] != arr2[i])
{
j = false;
break;
}
}
}
else
j = false;
Console.WriteLine(j);


}
Q4
public static void Main()
{
int a=0, wrd = 1, c=0;
string s = "She sails sea shells on the sea shore";
while(a<=s.Length-1)
{
if (s[a] == " " || s[a] == "t")
wrd++;
a++;
}
Console.WriteLine("no of words is"+ wrd);
foreach (char c in s)
c++;
Console.WriteLine(c);
}
03-02-2023
class Person
{
public void f1()
{
Console.WriteLine("From person 1");


}
public void f2()
{
Console.WriteLine("From person 2");


}
}

class Employee:Person
{
public void f3()
{
Console.WriteLine("From person 3");


}
public void f4()
{
Console.WriteLine("From person 4");


}

}
class Manager:Employee
{
public void f5()
{
Console.WriteLine("From person 5");


}
public void f6()
{
Console.WriteLine("From person 6");


}
}
public static void Main(string[] args)
{
Manager obj = new Manager(); ;
obj.f1();
obj.f2();
obj.f3();
obj.f4();
obj.f5();
obj.f6();
}

hirarchial inheritance


internal class heriInheri
{
class Flowers
{
public void Flowercolour()
{
Console.WriteLine("Colour is blue");

}
public void Flowersize()
{
Console.WriteLine("Small in size");
}
}
class Rose : Flowers
{
public void colourRose()
{
Console.WriteLine("Colour is red");
}
public void sizeRose()
{
Console.WriteLine("Size is small");
}

}
class Lotus
{
public void Lotuscolour()
{
Console.WriteLine("Colour is white");
}
public void sizeLotus()
{
Console.WriteLine("Size is big");
}
}
public static void Main(string[] args)
{
Rose obj = new Rose();
obj.colourRose();
obj.sizeRose();
Lotus obj2 = new Lotus();
obj2.Lotuscolour();
obj2.sizeLotus();
}
}