C++ Exercises: Display specified pattern for n number of rows using number
55. Odd Number Symmetric Pyramid with Row Count
Write a program in C++ to display such a pattern for n number of rows using numbers. There will be odd numbers in each row. The first and last number of each row will be 1 and the middle column will be the row number. N numbers of columns will appear in the 1st row.
Input number of rows: 7
1234567654321
12345654321
123454321
1234321
12321
121
1
Visual Presentation:
Sample Solution:
C++ Code :
#include <iostream> // Include the input/output stream library
using namespace std; // Using standard namespace
int main() // Main function where the execution of the program starts
{
int i, j, n; // Declare integer variables i, j, and n
// Display message asking for input
cout << "\n\n Display a pattern using odd number of numbers, the n numbers of columns will appear in 1st row:\n";
cout << "----------------------------------------------------------------------------------------------------\n";
cout << " Input number of rows: ";
cin >> n; // Read input for the number of rows from the user
for (i = n; i <= 1; i--) // Loop for the number of rows in reverse order
{
/* print blank spaces based on the row number */
for (j = 1; j <= n + 5 - i; j++) // Print spaces based on row number for formatting
cout << " "; // Print spaces
/* Display numbers in ascending order up to the middle */
for (j = 1; j <= i; j++) // Loop to print numbers in ascending order
cout << j; // Print the numbers in ascending order
/* Display numbers in reverse order after the middle */
for (j = i - 1; j >= 1; j--) // Loop to print numbers in reverse order after the middle
cout << j; // Print the numbers in reverse order
cout << endl; // Move to the next line after each row is printed
}
}
Sample Output:
Display a pattern using odd number of numbers, the n numbers of column
s will appear in 1st row:
-----------------------------------------------------------------------
-----------------------------
Input number of rows: 7
1234567654321
12345654321
123454321
1234321
12321
121
1
Flowchart:
For more Practice: Solve these Related Problems:
- Write a C++ program to print a symmetric pyramid where each row displays odd numbers, with 1 at the boundaries and the row number at the center.
- Write a C++ program that reads n and outputs a pyramid pattern with odd numbers such that the first row has n digits and subsequent rows decrease symmetrically.
- Write a C++ program to generate a number pyramid with odd-numbered patterns where the first and last digits are 1 and the center is the row number.
- Write a C++ program to display a pyramid pattern in which each row is a palindrome of increasing odd numbers, starting and ending with 1.
C++ Code Editor:
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