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C++ Conditional Statements

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If Statement

The if statement is a foundational building block of control flow in most programming languages. It allows a program to make decisions and execute different blocks of code based on whether a given condition is true or false. The idea behind if statements is simple: If a condition is met, do something, otherwise, don’t.

if.h

if.h

copy

              
1234

            
if (condition)
{
    // Code to be executed if the condition is true
}

A condition is a boolean expression that evaluates to either true or false. If it is true, the code within the curly braces { } is executed; otherwise, if the condition is false, the code inside the block is skipped, and the program continues with the next statement following the if block.

main.cpp

main.cpp

copy

              
123456789101112

            
#include <iostream>

int main() 
{
    int age = 33; // Declaring and initializing a variable
    
    if (age >= 18) // Checking whether the age is greater or equal to 18
    {
		// If so, output the message
        std::cout << "You are an adult" << std::endl;
    }
}

If you have an if statement with only one statement to be executed when the condition is true, you can omit the curly braces { }.

with_braces.h

with_braces.h

without_braces.h

without_braces.h

copy

              
1234

            
if (condition)
{
    statement;
}
Oppgave

Swipe to start coding

  1. Check if a two dimensional square with x (length) and y (height) can fit into another square with dimensions x1 (length) and y1 (height).
  2. Output Can fit in console if it can.

Løsning

solution.cpp

solution.cpp

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book
If Statement

The if statement is a foundational building block of control flow in most programming languages. It allows a program to make decisions and execute different blocks of code based on whether a given condition is true or false. The idea behind if statements is simple: If a condition is met, do something, otherwise, don’t.

if.h

if.h

copy

              
1234

            
if (condition)
{
    // Code to be executed if the condition is true
}

A condition is a boolean expression that evaluates to either true or false. If it is true, the code within the curly braces { } is executed; otherwise, if the condition is false, the code inside the block is skipped, and the program continues with the next statement following the if block.

main.cpp

main.cpp

copy

              
123456789101112

            
#include <iostream>

int main() 
{
    int age = 33; // Declaring and initializing a variable
    
    if (age >= 18) // Checking whether the age is greater or equal to 18
    {
		// If so, output the message
        std::cout << "You are an adult" << std::endl;
    }
}

If you have an if statement with only one statement to be executed when the condition is true, you can omit the curly braces { }.

with_braces.h

with_braces.h

without_braces.h

without_braces.h

copy

              
1234

            
if (condition)
{
    statement;
}
Oppgave

Swipe to start coding

  1. Check if a two dimensional square with x (length) and y (height) can fit into another square with dimensions x1 (length) and y1 (height).
  2. Output Can fit in console if it can.

Løsning

solution.cpp

solution.cpp

Switch to desktopBytt til skrivebordet for virkelighetspraksisFortsett der du er med et av alternativene nedenfor
Alt var klart?

Hvordan kan vi forbedre det?

Takk for tilbakemeldingene dine!

close

Awesome!

Completion rate improved to 7.69

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