C++ Number Pattern 35

Posted in C++ Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 117 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

C++ Number Pattern 35

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

example.cpp

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#include <iostream>
#include <iomanip>
using namespace std;

int main() {
  int i, j, k;
  k = 1;
  for (i = 1; i <= 5; i++) {
    for (j = 5; j >= 1; j--) {
      if (j > i)
        cout << "   ";
      else
        cout << setw(3) << k++;
    }
    cout << "\n";
  }
  return 0;
}

💻 Testing the Program

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

Output

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

🧠 How the Program Works

Let's break down the logic behind the code:

The program includes two C++ Standard Library headers:
- iostream: This header provides input and output stream functionality.
- iomanip: This header provides facilities to manipulate output formatting, in this case, setw().
The using namespace std; statement allows the program to use names from the std namespace directly, without needing to prefix them with std::.
The main() function is the entry point of the program.
Three integer variables i, j, and k are declared to be used in the loops.
The value of k is initialized to 1.
The outer loop for(i=1; i<=5; i++) iterates i from 15, both inclusive.
The inner loop for(j=5; j>=1; j--) iterates j from 5 to 1, both inclusive.
Inside the inner loop, there is an if-else condition:
- If j > i, it means we are in the left portion of the triangular pattern, so cout << " "; will print three spaces without any number.
- Otherwise, we are in the right portion of the triangular pattern, so cout << setw(3) << k++; will print the value of k (with width 3) and then increment k by one.
The setw(3) manipulator sets the width of the output field to 3 characters. This ensures that even if the number has fewer than three digits, it will be right-aligned and occupy three characters of space.
After completing the inner loop, a new line is printed using cout << "\n";. This moves the next iteration to the next line, creating the triangular pattern.
The outer loop repeats this process until i reaches 5.
Once the loops are done, the program returns 0, indicating successful completion of the main() function.

💯 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!