Kursinnehåll

C++ Conditional Statements

1. Introduction to Conditional Statements

What is Control Flow The Role of Conditional Statements If Statement Else Statement Nested If Statements Switch Statement

2. Conditional Control Flow Practice

Parallelogram Level of Knowledge Which Triangle Calculate Shipping Cost

3. Advanced Topics

Ternary Operator Guard Clause Summary and Overview

Ternary Operator

The ternary operator is a powerful tool that often used to make quick decisions in your code and can greatly improve code readability when used appropriately.

ternary


              1
            
condition ? expression_if_true : expression_if_false;

The condition is evaluated. If the condition is true, the expression before the ? is executed, otherwise, the expression after the : is executed.

The ternary operator is essentially just an alternative to the if-else statement, providing the code readability and convenience.

if_else

ternary


              123456789
            
int variable;
if (condition)
{
    variable = 25;
}
else
{
    variable = 10;
}

As you can see it using ternary operator can save code space and improve readability and efficiency. However, it is important to save a balance and maintain code maintainability and understandability.

Ternary operators can also be nested to handle more complex conditions. But don't fall into a pitfall full of ternary operatorsю

nested_ternary


              12345678910
            
std::string eligibility = 
    age < 18 
        ? "Too young"
        : (isStudent
            ? (hasJob
                ? "Eligible for student discount"
                : "Eligible for student perks")
            : (hasJob
                ? "Eligible for job-related benefits"
                : "Not eligible"));

It's really hard to understand what is going on. So it is better to limit yourself to a single ternary operator, with a maximum of one level of nesting at any given time.

Uppgift

Swipe to start coding

Find the largest value of variables x, y and z using nested ternary operators.
Output it in the console.

Lösning

solution

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 1

Ternary Operator

The ternary operator is a powerful tool that often used to make quick decisions in your code and can greatly improve code readability when used appropriately.

ternary


              1
            
condition ? expression_if_true : expression_if_false;

The condition is evaluated. If the condition is true, the expression before the ? is executed, otherwise, the expression after the : is executed.

The ternary operator is essentially just an alternative to the if-else statement, providing the code readability and convenience.

if_else

ternary


              123456789
            
int variable;
if (condition)
{
    variable = 25;
}
else
{
    variable = 10;
}

Ternary operators can also be nested to handle more complex conditions. But don't fall into a pitfall full of ternary operatorsю

nested_ternary


              12345678910
            
std::string eligibility = 
    age < 18 
        ? "Too young"
        : (isStudent
            ? (hasJob
                ? "Eligible for student discount"
                : "Eligible for student perks")
            : (hasJob
                ? "Eligible for job-related benefits"
                : "Not eligible"));

It's really hard to understand what is going on. So it is better to limit yourself to a single ternary operator, with a maximum of one level of nesting at any given time.

Uppgift

Swipe to start coding

Find the largest value of variables x, y and z using nested ternary operators.
Output it in the console.

Lösning

solution

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 1

Byt till skrivbordet för praktisk övningFortsätt där du är med ett av alternativen nedan