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C# Basics
course content

Course Content

C# Basics

C# Basics

1. Getting Started
Why C#?C# SyntaxDisplaying OutputChallenge: Outputting a TriangleCommentsChallenge: CommentsVariablesIdentifiersChallenge: Variable DeclarationBasic Operators & ExpressionsChallenge: Operators
2. Dealing with Data Types
Integer Data TypesChallenge: Declaring Explicitly Typed VariablesFloating-Point and DoubleBooleansCharacterStringStrings ChallengeBasic String FormattingChallenge: String FormattingDeclaring ConstantsBasic Type CastingType Casting PracticeBasic Type ConversionBasic Coding Practice
3. Control Structures
Comparison OperatorsLogical OperatorsChallenge: OperatorsOrder of OperationsIf StatementChallenge: if Conditionelse KeywordChallenge: else Keywordif-else ChainChallenge: if, else-if, elseswitch StatementChallenge: Switch
4. Loops
for LoopChallenge: for Loopwhile Loopdo-while LoopChallenge: do-while Loopbreak Statementcontinue StatementChallenge: break and continue
5. Arrays
What are Arrays?Challenge: Array DeclarationIndexingChallenge: IndexingMulti-Dimensional ArraysChallenge: Multi-Dimensional ArraysLooping through ArraysChallenge: Array Loops
6. Methods
What are Methods?Creating and Calling MethodsChallenge: Methods CreationMethod ParametersChallenge: Method with ParametersMethod Return ValuesChallenge: Return ValuesLocal & Global ScopesChallenge: ScopesWhat's Next?

book
Basic Coding Practice

A number is stored in a variable called num in the form of a string. Add 2 to the stored number. You may use the following steps:

  1. Convert the value of num string to an integer and store it in a new integer variable called temp.
  2. Add 2 to the value of temp.
  3. Convert the value of temp to a string and assign it to the variable num
cs

main

copy

              
123456789101112131415161718

            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string num = "15";

            // Write code below this line

            // Write code above this line

            Console.WriteLine(num); // Expected Output: 17
        }
    }
}

Use Convert.ToInt32() and Convert.ToString().

cs

main

copy

              
1234567891011121314151617181920

            
using System;

namespace ConsoleApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string num = "15";

            // Write code below this line
            int temp = Convert.ToInt32(num);
            temp = temp + 2;
            num = Convert.ToString(temp);
            // Write code above this line

            Console.WriteLine(num); // Expected Output: 17
        }
    }
}

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SectionΒ 2. ChapterΒ 14
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