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C++ Exercises: Display the pattern like pyramid using the alphabet

C++ For Loop: Exercise-48 with Solution

Write a program in C++ to display the pattern like pyramid using the alphabet.

Sample Solution:-

C++ Code :

#include <iostream>
using namespace std;

int main()
{
    int i, j;
    char alph = 'A';
    int n, blk;
    int ctr = 1;
    cout << "\n\n Display the pattern like pyramid using the alphabet:\n";
    cout << "---------------------------------------------------------\n";
    cout << " Input the number of Letters (less than 26) in the Pyramid: ";
    cin >> n;
    for (i = 1; i <= n; i++) {
        for (blk = 1; blk <= n - i; blk++)
            cout << "  ";
        for (j = 0; j <= (ctr / 2); j++) 
        {
            cout << alph++ << " ";
        }
        alph = alph - 2;
        for (j = 0; j < (ctr / 2); j++) 
        {
            cout << alph-- << " ";
        }
        ctr = ctr + 2;
        alph = 'A';
        cout << endl;
    }
}

Sample Output:

 Display the pattern like pyramid using the alphabet:                  
---------------------------------------------------------              
 Input the number of Letters (less than 26) in the Pyramid: 5          
        A                                                              
      A B A                                                            
    A B C B A                                                          
  A B C D C B A                                                        
A B C D E D C B A 

Flowchart:

Flowchart: Display the pattern like pyramid using the alphabet

C++ Code Editor:

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Previous: Write a program in C++ to display such a pattern for n number of rows using number. Each row will contain odd numbers of number. The first and last number of each row will be 1 and middle column will be the row number.
Next: Write a program in C++ to print a pyramid of digits as shown below for n number of lines.

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C++ Programming: Tips of the Day

What is a smart pointer and when should I use one?

This answer is rather old, and so describes what was 'good' at the time, which was smart pointers provided by the Boost library. Since C++11, the standard library has provided sufficient smart pointers types, and so you should favour the use of std::unique_ptr, std::shared_ptr and std::weak_ptr.

There was also std::auto_ptr. It was very much like a scoped pointer, except that it also had the "special" dangerous ability to be copied - which also unexpectedly transfers ownership.

It was deprecated in C++11 and removed in C++17, so you shouldn't use it.

std::auto_ptr<MyObject> p1 (new MyObject());
std::auto_ptr<MyObject> p2 = p1; // Copy and transfer ownership. 
                                 // p1 gets set to empty!
p2->DoSomething(); // Works.
p1->DoSomething(); // Oh oh. Hopefully raises some NULL pointer exception.

Ref : https://bit.ly/3mc9GHE