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Challenge: How to Work with Nested For Loops in C++
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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.
You 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
12345678910111213#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.
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You need to generate a multiplication table of a given size. The table should display all products for numbers from 1 up to the given size.
All the code should be implemented inside the multiplicationTable function.
- Use a
forloop to iterate over rows, with the iteratoristarting from1up tosize. - Inside the row loop, use another
forloop to iterate over columns, with the iteratorjalso running from1up tosize. - For each pair
(i, j), calculate the producti * j. - After finishing each row, print an empty line to separate rows visually.
# Output (multiplicationTable(3);)
1 * 1 = 1
1 * 2 = 2
1 * 3 = 3
2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
3 * 1 = 3
3 * 2 = 6
3 * 3 = 9
解答
実践的な練習のためにデスクトップに切り替える下記のオプションのいずれかを利用して、現在の場所から続行するフィードバックありがとうございます！
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