Lecture 28 - Fancy Pattern - 1

A "Fancy Pattern - 1" is a pattern that consists of numbers arranged in a specific way to form a symmetrical and visually appealing design. This pattern usually involves a combination of stars, spaces, and numbers. Let's create a "Fancy Pattern - 1" using C++:

Here's the pattern for 5 rows:

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

Let's write a C++ program to generate the "Fancy Pattern - 1" based on the number of rows specified by the user:

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#include <iostream> int main() {    int rows;    std::cout << "Enter the number of rows: ";    std::cin >> rows;    // Upper part of the pattern    for (int i = 1; i <= rows; i++) {        // Print spaces before the first number        for (int space = 1; space < i; space++) {            std::cout << " ";        }        // Print the first number and space between two numbers        std::cout << i;        for (int space = 1; space <= (rows - i) * 2 - 1; space++) {            std::cout << " ";        }        // Print the second number        if (i != rows) {            std::cout << i;        }        std::cout << std::endl;    }    // Lower part of the pattern    for (int i = rows - 1; i >= 1; i--) {        // Print spaces before the first number        for (int space = 1; space < i; space++) {            std::cout << " ";        }        // Print the first number and space between two numbers        std::cout << i;        for (int space = 1; space <= (rows - i) * 2 - 1; space++) {            std::cout << " ";        }        // Print the second number        if (i != rows) {            std::cout << i;        }        std::cout << std::endl;    }    return 0; }

Example output for rows = 5:

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

In the code above, we use two nested loops to print the upper and lower parts of the pattern. The outer loop i controls the number of rows, and the inner loop space prints the spaces before the first number, the first number, the spaces between two numbers, and the second number. The pattern is constructed in such a way that it forms a symmetrical and visually appealing design.

Feel free to experiment with different values of rows to generate "Fancy Pattern - 1" of different sizes.