Python Program to Print Inverted Pyramid Star Pattern

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Given the number of rows of the pyramid, the task is to print the Inverted Pyramid Star pattern in C, C++, and Python.

Examples:

Example1:

Input:

Given number of rows of the pyramid  =10

Output:

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

Example2:

Input:

Given number of rows of the pyramid  =10
Given character to print='&'

Output:

& & & & & & & & & & 
 & & & & & & & & & 
  & & & & & & & & 
   & & & & & & & 
    & & & & & & 
     & & & & & 
      & & & & 
       & & & 
        & & 
         &

Program to Print Inverted Pyramid Star Pattern in C, C++, and Python

Below are the ways to print Inverted Pyramid Star Pattern in C, C++, and Python.

• Using For Loop (Star Character)
• Using For Loop (User Character)

Method #1: Using For Loop (Star Character)

Approach:

• Give the number of rows of the pyramid as static input and store it in a variable.
• Loop from the number of rows to 0 in decreasing order using For Loop.
• Loop from 0 to the number of rows – iterator value of the parent For loop using another Nested For loop(Inner For loop).
• Print the space character in the inner For loop.
• Loop from 0 to the iterator value of the parent For loop using another Nested For loop(Inner For loop).
• Print the star character with a space character in the inner For loop.
• After the end of the two inner For loops print the newline character.
• The Exit of the Program.

1) Python Implementation

Below is the implementation:

# Give the number of rows of the pyramid as static input and store it in a variable.
pyRows = 10
# Loop from the number of rows to 0 in decreasing order using For Loop.
for m in range(pyRows, 0, -1):
    # Loop from 0 to the number of rows - iterator value of the parent
    # For loop using another Nested For loop(Inner For loop)..(0, rows - i):
    for n in range(0, pyRows-m):
        # Print the space character in the inner For loop.
        print(end=' ')
     # Loop from 0 to the iterator value of the parent For loop using another Nested For loop(Inner For loop).

    for l in range(0, m):
        # Print the star character with a space character in the inner For loop.
        print('*', end=' ')
    print()

Output:

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

2) C++ Implementation

Below is the implementation:

#include <iostream>
using namespace std;

int main()
{

    // Give the number of rows of the pyramid as static
    // input and store it in a variable.
    int pyRows=10;
    // Loop from the number of rows to 0 in decreasing order
    // using For Loop.
    for (int m = pyRows; m > 0; m--) {
        //  Loop from 0 to the number of rows - iterator
        //  value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int n = 0; n < pyRows - m; n++) {
            //  Print the space character in the inner For
            //  loop.
            cout << " ";
        }
        // Loop from 0 to the iterator value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int l = 0; l < m; l++) {
            // Print the star character with a space
            // character in the inner For loop.
            cout << "* ";
        }

        // Print the Newline Character after the end of the
        // inner for loop.
        cout << endl;
    }
    return 0;
}

Output:

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

3) C Implementation

Below is the implementation:

#include <stdio.h>

int main()
{
    // Give the number of rows of the pyramid as static
    // input and store it in a variable.
    int pyRows = 10;
    // Loop from the number of rows to 0 in decreasing order
    // using For Loop.
    for (int m = pyRows; m > 0; m--) {
        //  Loop from 0 to the number of rows - iterator
        //  value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int n = 0; n < pyRows - m; n++) {
            //  Print the space character in the inner For
            //  loop.
            printf(" ");
        }
        // Loop from 0 to the iterator value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int l = 0; l < m; l++) {
            // Print the star character with a space
            // character in the inner For loop.
            printf("* ");
        }

        // Print the Newline Character after the end of the
        // inner for loop.
        printf("\n");
    }
    return 0;
}

Output:

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

Method #2: Using For Loop (User Character)

Approach:

• Give the number of rows of the pyramid as user input and store it in a variable.
• Give the character as static input and store it in a variable.
• Loop from the number of rows to 0 in decreasing order using For Loop.
• Loop from 0 to the number of rows – iterator value of the parent For loop using another Nested For loop(Inner For loop).
• Print the space character in the inner For loop.
• Loop from 0 to the iterator value of the parent For loop using another Nested For loop(Inner For loop).
• Print the given character with a space character in the inner For loop.
• After the end of the two inner For loops print the newline character.
• The Exit of the Program.

1) Python Implementation

• Give the number of rows of the pyramid as user input using int(input()) and store it in a variable.
• Give the Character as user input using input() and store it in another variable.

Below is the implementation:

# Give the number of rows of the pyramid as user input using int(input()) and store it in a variable.
pyRows = int(input(
    'Enter some random number of rows of pyramid = '))
# Give the Character as user input using input() and store it in another variable.
givencharacter = input('Enter some random character = ')
# Loop from the number of rows to 0 in decreasing order using For Loop.
for m in range(pyRows, 0, -1):
    # Loop from 0 to the number of rows - iterator value of the parent
    # For loop using another Nested For loop(Inner For loop).
    for n in range(0, pyRows-m):
        # Print the space character in the inner For loop.
        print(end=' ')
     # Loop from 0 to the iterator value of the parent For loop using another Nested For loop(Inner For loop).

    for l in range(0, m):
        # Print the given character with a space character in the inner For loop.
        print(givencharacter, end=' ')
    print()

Output:

Enter some random number of rows of pyramid = 10
Enter some random character = &
& & & & & & & & & & 
 & & & & & & & & & 
  & & & & & & & & 
   & & & & & & & 
    & & & & & & 
     & & & & & 
      & & & & 
       & & & 
        & & 
         &

2) C++ Implementation

• Give the number of rows of the pyramid as user input using scanf and store it in a variable.
• Give the Character as user input using cin and store it in another variable.

Below is the implementation:

#include <iostream>
using namespace std;

int main()
{

    // Give the number of rows
    // as user input using cin and store it in a
    // variable.
    int pyRows;
    char givencharacter;
    cout << "Enter some random number of rows = " << endl;
    cin >> pyRows;
    // Give the Character as user input using cin and store
    // it in another variable.
    cout << "Enter some random character = " << endl;
    cin >> givencharacter;
    cout << endl;
    // Loop from the number of rows to 0 in decreasing order
    // using For Loop.
    for (int m = pyRows; m > 0; m--) {
        //  Loop from 0 to the number of rows - iterator
        //  value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int n = 0; n < pyRows - m; n++) {
            //  Print the space character in the inner For
            //  loop.
            cout << " ";
        }
        // Loop from 0 to the iterator value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int l = 0; l < m; l++) {
            // Print the star character with a space
            // character in the inner For loop.
            cout << givencharacter << " ";
        }

        // Print the Newline Character after the end of the
        // inner for loop.
        cout << endl;
    }
    return 0;
}

Output:

Enter some random number of rows of pyramid = 
10
Enter some random character = 
&
& & & & & & & & & & 
 & & & & & & & & & 
  & & & & & & & & 
   & & & & & & & 
    & & & & & & 
     & & & & & 
      & & & & 
       & & & 
        & & 
         &

3) C Implementation

• Give the number of rows as user input using scanf and store it in a variable.
• Give the Character as user input using scanf and store it in another variable.

Below is the implementation:

#include <stdio.h>

int main()
{
    // Give the number of rows
    //  as user input using scanf and store it in a
    // variable.
    int pyRows;
    char givencharacter;
    // Give the Character as user input using scanf and
    // store it in another variable.
    scanf("%d", &pyRows);
    scanf("%c", &givencharacter);
    // Loop from the number of rows to 0 in decreasing order
    // using For Loop.
    for (int m = pyRows; m > 0; m--) {
        //  Loop from 0 to the number of rows - iterator
        //  value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int n = 0; n < pyRows - m; n++) {
            //  Print the space character in the inner For
            //  loop.
            printf(" ");
        }
        // Loop from 0 to the iterator value of the parent
        // For loop using another Nested For loop(Inner For
        // loop).
        for (int l = 0; l < m; l++) {
            // Print the given character with a space
            // character in the inner For loop.
            printf("%c ", givencharacter);
        }

        // Print the Newline Character after the end of the
        // inner for loop.
        printf("\n");
    }
    return 0;
}

Output:

10&
& & & & & & & & & & 
 & & & & & & & & & 
  & & & & & & & & 
   & & & & & & & 
    & & & & & & 
     & & & & & 
      & & & & 
       & & & 
        & & 
         &

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