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C++ Introduction
course content

Course Content

C++ Introduction

C++ Introduction

1. Getting Started
Why to Learn C++What is C++Entry Point of a ProgramStandard Library and FilesPreprocessor DirectivesThe First Program
2. Variables and Data Types
Data TypesUnderstanding VariablesNumerical Data TypesIntroduction to StringIntroduction to ArraysKeywords sizeof(), auto and typedefWorking with the Array
3. Introduction to Operators
Simple OperatorsA Little MathLogical OperatorsCompound Assignment OperatorPracticing Math Basics
4. Introduction to Program Flow
If...else StatementTernary OperatorSwitch StatementWhile LoopDo...while LoopFor LoopFibonacci Number with Loops
5. Introduction to Functions
What are Functions?Type of FunctionsReturn Statement in FunctionsFunctions With Arguments Simple Function

bookIntroduction to String

You can also store text in variables, in addition to symbols using char. For this, you need to:

  • Connect the string file;
  • Use std scope resolution;
  • Declare a variable of type string.
cpp

main

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#include <iostream>
#include <string>

int main()
{
	//declaring string variable
	std::string myStringVariable = "codefinity";

	//displaying our string variable
	std::cout << myStringVariable << std::endl;
}

Strings variables can also contain numbers (as text):

cpp

main

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12345678910

            
#include <iostream>
#include <string>

int main()
{
	std::string myStringVariable = "1024";

	//displaying our string variable
	std::cout << myStringVariable << std::endl;;
}

If you try to add two string variables, you get a concatenation (it works without spaces):

cpp

main

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1234567891011

            
#include <iostream>
#include <string>

int main()
{
	std::string var1 = "Hello "; //space is also a symbol
	std::string var2 = "World";

	//displaying the sum of string variables
	std::cout << var1 + var2 << std::endl;
}

The same thing will happen with numbers – they will not be added algebraically.

What will the console display?

What will the console display?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 2. Chapter 4
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