C++ Alphabet Pattern 21

Posted in C++ Tutorial

Updated on Jan 10, 2024

By Mari Selvan

👁️ 88 - Views

⏳ 4 mins

💬 1 Comment

Photo Credit to CodeToFun

C++ Alphabet Pattern 21

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

example.cpp

Copied

#include <iostream>
using namespace std;

int main() {
  int i, j;
  for (i = 1; i <= 5; i++) {
    for (j = 1; j < i * 2; j++) {
      if (j % 2 == 0)
        cout << "*";
      else
        cout << char(i + 64);
    }
    cout << "\n";
  }
  for (i = 4; i >= 1; i--) {
    for (j = 1; j < i * 2; j++) {
      if (j % 2 == 0)
        cout << "*";
      else
        cout << char(i + 64);
    }
    cout << "\n";
  }
  return 0;
}

💻 Testing the Program

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

Output

A
B*B
C*C*C
D*D*D*D
E*E*E*E*E
D*D*D*D
C*C*C
B*B
A

🧠 How the Program Works

Let's break down the logic behind the code:

The program starts with the inclusion of the necessary header file iostream, which provides input/output operations. The using namespace std; line allows us to use the standard library without explicitly specifying the std namespace.
The main() function is the entry point of the program. It returns an integer value.
Inside the main() function, two integer variables i and j are declared. These variables will be used as loop counters.
The first for loop runs from i=1 to i<=5, incrementing i by 1 in each iteration. This loop is responsible for printing the upper half of the pattern.
Inside the first for loop, there is another nested for loop that runs from j=1 to j<i*2. It increments j by 1 in each iteration. This loop is responsible for printing the characters or asterisks in each row.
Inside the nested for loop, there is an if statement that checks if j is divisible by 2 (j%2 == 0). If it is, an asterisk (*) is printed using cout << "*". Otherwise, it prints a character converted from the corresponding ASCII value using char(i+64).
After the nested for loop, a newline character "\n" is printed using cout << "\n". This moves the cursor to the next line, creating a new row in the pattern.
The second for loop runs from i=4 to i>=1, decrementing i by 1 in each iteration. This loop is responsible for printing the lower half of the pattern.
Inside the second for loop, the same nested for loop and if statement are used to print characters or asterisks based on the same logic as the upper half of the pattern.
After the second nested for loop, a newline character is printed using cout << "\n".
Finally, the main() function ends with a return 0; statement, 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 alphabet 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!