static void Main(string[] args)
{
Console.WriteLine("Calculator");
while (true)
{
Console.WriteLine("Enter First Number:");
int x = int.Parse(Console.ReadLine());
Console.WriteLine("Enter Operation");
string strop = Console.ReadLine();
char op = char.Parse(strop);
Console.WriteLine("Enter Second Number");
int y = int.Parse(Console.ReadLine());
Console.WriteLine($"{x}{op}{y}");
if (op == '+')
{
Add.Main(x, y);
}
else if (op == '-')
{
Sub.Main(x, y);
}
else if (op == '*')
{
Mult.Main(x, y);
}
else if (op == '/')
{
Div.Main(x, y);
}
else
{
Console.WriteLine("Command Not Yet Supported");
}
}
}
static void Main(string[] args)
{
string str1 = "ashwin";
string str2 = "kumar";
//Compares with the other string and if it's true states 0,1st string < 2nd , It returns 1,and 1st string>2nd string,it returns -1
Console.WriteLine(string.Compare(str1, str2));
//Compares with the other string and if it's true states 0,1st string < 2nd , It returns positive,and 1st string>2nd string,it returns negative
Console.WriteLine(string.CompareOrdinal(str1, str2));
//compares the string with another
Console.WriteLine(str1.CompareTo(str2));
//Concatinate 2 string(joins)
Console.WriteLine(string.Concat(str2, str1));
//check whether it contains same as str1
Console.WriteLine(str1.Contains(str2));
//Copy
string str3 = string.Copy(str1);
Console.WriteLine(str1);
//Copy Toc, it copies the a char in the index and copies upto the fixed index
string s1 = "Hello C#, How Are You?";
char[] ch = new char[15];
s1.CopyTo(10, ch, 0, 12);
Console.WriteLine(ch);
//checks whether it ends with the same char
Console.WriteLine(str1.EndsWith(str2));
//Checks whether Str1 equals str2
Console.WriteLine(str1.Equals(str2));
//it returns the current date as a output
string s11 = string.Format("{0:D}", DateTime.Now);
Console.WriteLine(s11);
//it will make the string inton the object enumurator which we can loop through it.
string s2 = "Hello C#";
CharEnumerator ch1 = s2.GetEnumerator();
while (ch1.MoveNext())
{
Console.WriteLine(ch1.Current);
}
//To get a hashcode of a string,it returns integer output
Console.WriteLine(str1.GetHashCode());
//To get the type of the datatype
Console.WriteLine(s1.GetType());
//Is used to get type code of a string
Console.WriteLine(s1.GetTypeCode());
//IndexOf is used to find in which index did the character located
int index = s1.IndexOf('e');
Console.WriteLine(index);
//It will insert the char to the s12
string s12 = "Hello C#";
string s22 = s12.Insert(5, "-");
Console.WriteLine(s2);
//intern used to retrive reference of the particular string
string s3 = string.Intern(s1);
//intered reverive reference of the particular string
string s33 = string.IsInterned(s1);
//check whether the string is unicode normalization form
string s31 = "Hello C#";
bool b1 = s1.IsNormalized();
Console.WriteLine(s31);
Console.WriteLine(b1);
//Check whether the normazlized and produce the string value,
string s32 = s1.Normalize();
Console.WriteLine(s32);
//Null or empty, It is used to check the string is either null or empty
string s01 = "Hello C#";
string s02 = "";
bool b01 = string.IsNullOrEmpty(s01);
bool b02 = string.IsNullOrEmpty(s02);
Console.WriteLine(b01);
Console.WriteLine(b02);
//Null or WhiteSpace,Check whether the string contains null or whitespace
bool b40 = string.IsNullOrWhiteSpace(s01);
Console.WriteLine(b40);
//join concodinates with the array with the sepearator b/w them
string[] s100 = { "Hello", "C#", "by", "javatpoint" };
string s300 = string.Join("-", s100);
Console.WriteLine(s300);
//Index of is used to find the character index and last index of is used to find the last index of the specified character.
string s111 = "Hello C#";
int first = s111.IndexOf('l');
int last = s111.LastIndexOf('l');
Console.WriteLine(first);
Console.WriteLine(last);
//Last Index of Any will be used to find the last index with one or more char,like r before b,it will find from last wh=here r is present beside b.
string s112 = "abracadabra";
char[] ch11 = { 'r', 'b' };
int index1 = s112.LastIndexOfAny(ch11);//Finds 'r' at the last
Console.WriteLine(index1);
Console.WriteLine("odd number code");
FindingOddinArray.odd1();
Console.WriteLine("Even number code");
FindingOddinArray.even();
Console.WriteLine("enter numbers to add that all");
List <int> numbersInput = new List <int>();
int responsenumber1 = Convert.ToInt32(Console.ReadLine());
numbersInput.Add(responsenumber1);
FindingOddinArray.listofnumbers(new List <int>()
{
responsenumber1
});
Console.ReadLine();
Console.WriteLine("List stopped");
updatedcalc.UpdatedAdd(12, 43);//the obsolete attribute was been assigned so,this will be suggest the use to use the list,
updatedcalc.UpdatedAdd(new List <int>()
{
97, 65, 56, 32
});
Console.ReadLine();//adding multiple number calc
first:
Console.WriteLine("Welcome to calculator");
Console.WriteLine("For Performing Calculations, Press 'calc'");
Console.WriteLine("For Performing math Operstions, Press 'math'");
var response = Console.ReadLine();
var res = response.ToLower();
if (res == "calc")
{
Welcome.welcome();
var response1 = Console.ReadLine();
var res1 = response1.ToLower();
if (response1 == "1")
{
Add.add();
}
if (response1 == "2")
{
Sub.sub();
}
if (response1 == "3")
{
Div.div();
}
}
if (res == "math")
{
Welcome.welcome1();
var response2 = Console.ReadLine();
var res2 = response2.ToLower();
if (res2 == "1")
{
AreaOf_theRectangle.rectangle();
}
if (res2 == "2")
{
AreaOftheTriangle.triangle();
}
if (res2 == "3")
{
AreaOftheCircle.circle();
}
}
Console.WriteLine("PRESS 'YES' IF YOU WANT TO CONTINUE");
var yes = Console.ReadLine();
if (yes == "YES" || yes == "yes")
{
goto first;
}
}
