C++ Exercises: Display Pascal's triangle like pyramid

C++ For Loop: Exercise-45 with Solution

Write a program in C++ to display Pascal's triangle like pyramid.

Sample Solution:-

C++ Code :

#include <iostream>
using namespace std;

int main()
    int row,c=1,blk,i,j;
    cout << "\n\n Display the Pascal's triangle:\n";
    cout << "-----------------------------------\n";
    cout << " Input number of rows: ";
    cin >> row;
        cout<<"  ";
            if (j==0||i==0)
            cout<<c<<"   ";

Sample Output:

 Display the Pascal's triangle:                                        
 Input number of rows: 5                                               
        1   1                                                          
      1   2   1                                                        
    1   3   3   1                                                      
  1   4   6   4   1 


Flowchart: Display Pascal's triangle like pyramid

C++ Code Editor:

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Previous: Write a program in C++ to display the pattern like a diamond.
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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