﻿ C++ : Pyramid of digits as shown below for n number of lines

# C++ Exercises: Print a pyramid of digits as shown below for n number of lines

## C++ For Loop: Exercise-49 with Solution

Write a C++ program to print a pyramid of digits as shown below for n number of lines.

```    1
232
34543
4567654
567898765
```

Sample Solution:

C++ Code :

``````#include <iostream>
using namespace std;

int main()
{
int i, j, spc, n;
cout << "\n\n Display the pattern like pyramid using digits:\n";
cout << "---------------------------------------------------\n";
cout << " Input the number of rows: ";
cin >> n;
for (i = 1; i <= n; i++)
{
spc = n - i;
while (spc-- > 0)
cout << " ";
for (j = i; j < 2 * i - 1; j++)
cout << j;
for (j = 2 * i - 1; j > i - 1; j--)
cout << j;
cout << endl;
}
}
``````

Sample Output:

``` Display the pattern like pyramid using digits:
---------------------------------------------------
Input the number of rows: 5
1
232
34543
4567654
567898765
```

Flowchart: C++ Code Editor:

What is the difficulty level of this exercise?

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## C++ Programming: Tips of the Day

What is the "-->" operator in C/C++?

--> is not an operator. It is in fact two separate operators, -- and >.

The conditional's code decrements x, while returning x's original (not decremented) value, and then compares the original value with 0 using the > operator.

To better understand, the statement could be written as follows:

while( (x--) > 0 )

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

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