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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
Introduction to VariablesData TypesNumerical 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

bookTernary Operator

The ternary operator offers a concise alternative to the if...else statement, with a notable distinction. It consists of three key elements:

  1. Boolean expression;
  2. Instructions for the true case;
  3. Instructions for the false case.

Such an operator is convenient to use, for example, when comparing two numbers:

cpp

main

copy

              
1234567891011

            
#include <iostream>

int main()
{
	int var1 = 50;
	int var2 = 9;

	int result = (var1 > var2) ? var1 : var2;

	std::cout << result << std::endl;
}

In this case, the outcome of the ternary operation has been assigned to the result variable.

When the comparison returns a true result, the value of var1 will be stored in the result variable.

Conversely, if the comparison result is false, to the result variable will be assigned the value of the var2 variable.

Note

Observe data type compatibility!

How it would look like using if...else:

cpp

main

copy

              
12345678910111213141516171819

            
#include<iostream>

int main()
{
	int var1 = 50;
	int var2 = 9;
	int result;

	if (var1 > var2)
	{
		result = var1;
	}
	else
	{
		result = var2;
	}

	std::cout << result << " > " << var2 << std::endl;
}
What will be written to the `result` variable?

What will be written to the result variable?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 4. Chapter 2
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