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How to Work with Nested For Loops in C++

A nested for loops are almost the same as a nested while loops. They allow you to create a set of iterations within another set of iterations, but in more convenient way. It is particularly useful when dealing with two-dimensional or multi-dimensional data structures with elements your want to iterate through.

Remember like in the previous section, we had a task that involved creating a rectangle in a console using three loops? As you already could guess there is a more straightforward and flexible way to accomplish this.

main.cpp

main.cpp

copy

              
123456789101112

            
#include <iostream>

int main() {
    for (int i = 0; i < 5; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            std::cout << '#';
        }
        std::cout << std::endl;
    }
}

Understanding nested loops may be challenging initially, but once you grasp the concept, it becomes easy. So, let's try to practice.

Opgave

Swipe to start coding

Create a nested loop to output the next line instead of a rectangle: ##### #### ### ## #

Løsning

solution.cpp

solution.cpp

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
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How to Work with Nested For Loops in C++

A nested for loops are almost the same as a nested while loops. They allow you to create a set of iterations within another set of iterations, but in more convenient way. It is particularly useful when dealing with two-dimensional or multi-dimensional data structures with elements your want to iterate through.

Remember like in the previous section, we had a task that involved creating a rectangle in a console using three loops? As you already could guess there is a more straightforward and flexible way to accomplish this.

main.cpp

main.cpp

copy

              
123456789101112

            
#include <iostream>

int main() {
    for (int i = 0; i < 5; i++)
    {
        for (int j = 0; j < 5; j++)
        {
            std::cout << '#';
        }
        std::cout << std::endl;
    }
}

Understanding nested loops may be challenging initially, but once you grasp the concept, it becomes easy. So, let's try to practice.

Opgave

Swipe to start coding

Create a nested loop to output the next line instead of a rectangle: ##### #### ### ## #

Løsning

solution.cpp

solution.cpp

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

close

Awesome!

Completion rate improved to 9.09

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