using System;
using System.Collections.Generic;
using System.Linq;
namespace HollowWorld
{
public class Program
{
public static void Main(string[] args)
{
int[] numbers = { 1, 9, 21, 44, 67, 88, 98, 101, 15};
//Find if collection is having a number > 100;
var res = IsAnyNumberGreaterThan100(numbers);
Console.WriteLine($"is collection having a number>100 : {res}");
Func<int,bool> GreaterThan100 = IsNumGreaterThan100;
// using func predicate
Console.WriteLine( $"is collection having a number>100 { IsAny(numbers,IsNumGreaterThan100)}");
Console.WriteLine($" Is Collection having a num > 100 using Linq call: {LinqMethod(numbers)}");
}
static bool LinqMethod(int[] numbers)
{
return numbers.Any(number =>number>100);
}
//write a method here
public static bool IsAnyNumberGreaterThan100(int[] numbers)
{
foreach(var num in numbers)
{if (num>100) return true;}
return false;
}
public static bool IsAny(int[] numbers, Func<int,bool> predicate)
{
foreach ( var num in numbers)
{
if(predicate(num))
{
return true;
}
}
return false;
}
public static bool IsNumGreaterThan100(int num)
{return num>100;}
public static bool IsNumEven(int num)
{return num%2==0;}
}
} Write, Run & Share C# code online using OneCompiler's C# online compiler for free. It's one of the robust, feature-rich online compilers for C# language, running on the latest version 8.0. Getting started with the OneCompiler's C# compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C# and start coding.
OneCompiler's C# online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
using System;
namespace Sample
{
class Test
{
public static void Main(string[] args)
{
string name;
name = Console.ReadLine();
Console.WriteLine("Hello {0} ", name);
}
}
}
C# is a general purpose object-oriented programming language by Microsoft. Though initially it was developed as part of .net but later it was approved by ECMA and ISO standards.
You can use C# to create variety of applications, like web, windows, mobile, console applications and much more using Visual studio.
| Data Type | Description | Range | size |
|---|---|---|---|
| int | To store integers | -2,147,483,648 to 2,147,483,647 | 4 bytes |
| double | to store large floating point numbers with decimals | can store 15 decimal digits | 8 bytes |
| float | to store floating point numbers with decimals | can store upto 7 decimal digits | 4 bytes |
| char | to store single characters | - | 2 bytes |
| string | to stores text | - | 2 bytes per character |
| bool | to stores either true or false | - | 1 bit |
datatype variable-name = value;
When ever you want to perform a set of operations based on a condition or set of few conditions IF-ELSE is used.
if(conditional-expression) {
// code
}
else {
// code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement) {
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Array is a collection of similar data which is stored in continuous memory addresses. Array values can be fetched using index. Index starts from 0 to size-1.
data-type[] array-name;
Method is a set of statements which gets executed only when they are called. Call the method name in the main function to execute the method.
static void method-name()
{
// code to be executed
}