Printing diamond pattern outline using For Loop in C++

This is a C++ program that uses loops to print a diamond pattern of stars. The pattern is printed in two parts - first, the upper half of the diamond is printed, and then the lower half is printed. Here is an explanation of how the program works:

The program first declares three integer variables - i, j, and n.
The user is prompted to enter a value for n.
The program enters a loop that iterates n times. This loop is responsible for printing the upper half of the diamond.
Within the first loop, there is another loop that prints spaces before the stars. The number of spaces printed is equal to n-i.
Then, there is another loop that prints the first half of the stars. If j is equal to 1, a star is printed, otherwise, spaces are printed.
Next, there is another loop that prints the second half of the stars. If j is equal to i, a star is printed, otherwise, spaces are printed.
After the first loop completes, there is another loop that iterates n times. This loop is responsible for printing the lower half of the diamond.
Within the second loop, there is another loop that prints spaces before the stars. The number of spaces printed is equal to i.
Then, there is another loop that prints the first half of the stars. If j is equal to n, a star is printed, otherwise, spaces are printed.
Next, there is another loop that prints the second half of the stars. If j is equal to n-i+1, a star is printed, otherwise, spaces are printed.
The program then exits the second loop and the main() function, returning 0.
The diamond pattern is printed to the console.

Source Code

#include<iostream>
using namespace std;
int main()
{
    int i,j,n;
    cout<<"\nEnter the value:";
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=1;j<=(n-i);j++)
        {
            cout<<"  ";
        }
        for(j=1;j<i;j++)
        {
            if(j==1)
            {
                cout<<" *";
            }
            else
            {
                cout<<"  ";
            }
        }
        for(j=1;j<=i;j++)
        {
            if(j==i)
            {
                cout<<" *";
            }
            else
            {
                cout<<"  ";
            }
        }
    }
    for(i=1;i<=n;i++)
    {
        cout<<"\n";
        for(j=1;j<=i;j++)
        {
            cout<<"  ";
        }
        for(j=n;j>i;j--)
        {
            if(j==n)
            {
            cout<<" *";
            }
            else
            {
                cout<<"  ";
            }
        }
        for(j=2;j<=(n-i);j++)
        {
            if(j==n-i)
            {
            cout<<" *";
            }
            else
            {
                cout<<"  ";
            }
        }
    }
    return 0;
}

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Output

Enter the value:10
                   *
                 *   *
               *       *
             *           *
           *               *
         *                   *
       *                       *
     *                           *
   *                               *
 *                                   *
   *                               *
     *                           *
       *                       *
         *                   *
           *               *
             *           *
               *       *
                 *   *
                   *

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