Lecture 5:- Let's solve some Patterns

Let's solve some common patterns using loops in C++. We'll start with a few basic patterns and then move on to more complex ones. The patterns will be printed to the console.

1. Pattern 1 - Square Pattern:

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**** **** **** ****

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#include <iostream> int main() {    int n = 4; // Number of rows    for (int i = 0; i < n; i++) {        for (int j = 0; j < n; j++) {            std::cout << "*";        }        std::cout << std::endl;    }    return 0; }

1. Pattern 2 - Right Triangle:

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#include <iostream> int main() {    int n = 4; // Number of rows    for (int i = 1; i <= n; i++) {        for (int j = 1; j <= i; j++) {            std::cout << "*";        }        std::cout << std::endl;    }    return 0; }

1. Pattern 3 - Pyramid:

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   *  *** ***** *******

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#include <iostream> int main() {    int n = 4; // Number of rows    for (int i = 1; i <= n; i++) {        for (int j = 1; j <= n - i; j++) {            std::cout << " ";        }        for (int k = 1; k <= 2 * i - 1; k++) {            std::cout << "*";        }        std::cout << std::endl;    }    return 0; }

1. Pattern 4 - Inverted Pyramid:

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******* *****  ***   *

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#include <iostream> int main() {    int n = 4; // Number of rows    for (int i = n; i >= 1; i--) {        for (int j = 1; j <= n - i; j++) {            std::cout << " ";        }        for (int k = 1; k <= 2 * i - 1; k++) {            std::cout << "*";        }        std::cout << std::endl;    }    return 0; }

1. Pattern 5 - Diamond:

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   *  *** ***** ******* *****  ***   *

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#include <iostream> int main() {    int n = 4; // Number of rows    // Upper part of the diamond    for (int i = 1; i <= n; i++) {        for (int j = 1; j <= n - i; j++) {            std::cout << " ";        }        for (int k = 1; k <= 2 * i - 1; k++) {            std::cout << "*";        }        std::cout << std::endl;    }    // Lower part of the diamond    for (int i = n - 1; i >= 1; i--) {        for (int j = 1; j <= n - i; j++) {            std::cout << " ";        }        for (int k = 1; k <= 2 * i - 1; k++) {            std::cout << "*";        }        std::cout << std::endl;    }    return 0; }

Feel free to modify the value of n in each pattern to change the size of the pattern. These are just a few examples of common patterns, and there are many more patterns that you can create using loops and other programming techniques.