C++ Number Pattern 55

Posted in C++ Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 105 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

C++ Number Pattern 55

Here`s a program that prints the above number pattern using C++ Programming:

example.cpp

Copied

#include <iostream>
using namespace std;

int main() {
  int i, j, k, res;
  for (i = 1; i <= 5; i++) {
    k = 4;
    res = i;
    for (j = i; j < i + i; j++) {
      if (i == j)
        cout << j << " ";
      else {
        res = res + k;
        cout << res << " ";
        k--;
      }
    }
    cout << "\n";
  }
  return 0;
}

💻 Testing the Program

When you run the above program, it will print the following output:

Output

1
2 6
3 7 10
4 8 11 13
5 9 12 14 15

🧠 How the Program Works

Let's break down the logic behind the code:

The program includes the necessary header file iostream which allows input/output operations and uses the std namespace to avoid explicitly writing std:: before standard library elements.
The main() function is the entry point of the program.
The variables i, j, k, and res are declared. These variables will be used in the subsequent loops and calculations.
The outer for loop: for(i=1; i<=5; i++) runs from i=1 to i=5, incrementing i by 1 on each iteration.
Inside the outer loop, k is initialized to 4, and res is set to the current value of i.
The inner for loop: for(j=i; j<i+i; j++) runs from j=i to j<i+i, incrementing j by 1 on each iteration.
Inside the inner loop, the program checks if i is equal to j. If true, it prints the value of j followed by a space. This will be the case in the first iteration of the inner loop.
If i is not equal to j, the program executes the else block.
In the else block, the value of res is updated by adding k to it, and then res is printed followed by a space. The value of k is then decremented by 1.
The inner loop continues until j is equal to i+i. In each iteration, the value of res will change based on the previous value and the decreasing value of k.
After the inner loop finishes, a newline character is printed to move to the next line before the outer loop continues.
The outer loop continues until i becomes greater than 5, printing a series of numbers in a triangular pattern.
After the completion of both loops, the main() function returns 0, indicating successful program execution.

💯 Tips for Enhancement:

Explore the versatility of this pattern by adjusting its parameters. Whether you increase or decrease the size, tweak the spacing, or modify the characters used, each change opens up a world of possibilities, allowing you to customize and create your unique visual effects.

✔ Conclusion:

Creating visually appealing patterns is not only a fun endeavour but also a great way to enhance your programming or design skills. We hope this tutorial has inspired you to explore the world of creative coding. Share your creations with us, and let your imagination run wild!

🤗 Closing Call-to-Action:

We'd love to see your unique interpretations of the number pattern. Share your creations in the comments below, and don't hesitate to reach out if you have any questions or suggestions for future tutorials. Happy coding!