C++ Exercises: Display specified pattern for n number of rows using number

C++ For Loop: Exercise-55 with Solution

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 

Pictorial Presentation:

Sample Solution:

C++ Code :

#include <iostream>
using namespace std;

int main()
{
   int i,j,n;
    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;
    for(i=n;i>=1;i--)
   {
     /* print blank spaces */
     for(j=1;j<=n+5-i;j++)
	cout<<" ";
     /* Display number in ascending order upto middle*/
     for(j=1;j<=i;j++)
       cout<<j;
 
     /* Display  number in reverse order after middle */
       for(j=i-1;j>=1;j--)
	  cout<<j;
     cout<<endl;
   }
}

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:

C++ Code Editor:

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