C++ Number Pattern 31

Posted in C++ Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 128 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

C++ Number Pattern 31

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

example.cpp

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#include <iostream>
using namespace std;

int main() {
  int i, j;
  // First Part
  for (i = 1; i <= 5; i++) {
    for (j = 1; j < i * 2; j++) {
      if (j % 2 == 0)
        cout << "*";
      else
        cout << i;
    }
    cout << "\n";
  }
  // Second Part
  for (i = 4; i >= 1; i--) {
    for (j = 1; j < i * 2; j++) {
      if (j % 2 == 0)
        cout << "*";
      else
        cout << i;
    }
    cout << "\n";
  }
  return 0;
}

💻 Testing the Program

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

Output

1
2*2
3*3*3
4*4*4*4
5*5*5*5*5
4*4*4*4
3*3*3
2*2
1

🧠 How the Program Works

Let's break down the logic behind the code:

The program includes the necessary input-output stream header file iostream to perform input and output operations.
The line using namespace std; indicates that the program will use the standard namespace to access common C++ functions and objects without explicitly specifying std::.
The main() function is the entry point of the program.
Two integer variables i and j are declared to be used as loop counters.
The program consists of two main parts: the "First Part" and the "Second Part." Each part contains nested loops to print a specific pattern of asterisks (*) and integers.
First Part:
- The first for loop initializes i to 1 and continues as long as i is less than or equal to 5.
- The inner for loop initializes j to 1 and continues as long as j is less than i*2.
- In each iteration of the inner loop, the program checks if j is even (i.e., j%2 == 0). If j is even, it prints an asterisk (*); otherwise, it prints the value of i.
- After printing the pattern for the current value of i, a new line is inserted using cout << "\n";.
Second Part:
- The second part is similar to the first part, but the for loop starts with i initialized to 4 and decrements i in each iteration until i is 1.
- The inner for loop is the same as in the first part, printing the pattern based on the current value of i.
Finally, the main() function returns 0, indicating successful execution of the program.

💯 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!