C++ Program to Print Diamond Star Pattern

Write a C++ program to print the diamond star pattern using for loop.

#include<iostream>
using namespace std;

int main()
{
	int i, j, k, rows;
     
    cout << "Enter Diamond Star Pattern Row = ";
    cin >> rows;

    cout << "Diamond Star Pattern\n"; 

    for(i = 1; i <= rows; i++)
    {
    	for(j = 1; j <= rows - i; j++)
		{
            cout << " ";
        }
        for(k = 1; k <= i * 2 - 1; k++)
        {
            cout << "*";
        }
        cout << "\n";
    }	

    for(i = rows - 1; i > 0; i--)
    {
    	for(j = 1; j <= rows - i; j++)
		{
            cout << " ";
        }
        for(k = 1; k <= i * 2 - 1; k++)
        {
            cout << "*";
        }
        cout << "\n";
    }
	
 	return 0;
}
C++ Program to Print Diamond Star Pattern

This C++ example prints the diamond pattern of a given symbol using a while loop.

#include<iostream>
using namespace std;

int main()
{
	int i = 1, j, k, rows;
    char ch;
     
    cout << "Enter Diamond Star Pattern Row = ";
    cin >> rows;

    cout << "Enter Symbol for Diamond Pattern = ";
    cin >> ch;

    cout << "Diamond Star Pattern\n"; 

    while(i <= rows)
    {
        j = 1;
    	while( j <= rows - i)
		{
            cout << " ";
            j++;
        }
        k = 1;
        while( k <= i * 2 - 1)
        {
            cout << ch;
            k++;
        }
        cout << "\n";
        i++;
    }	

    i = rows - 1;
    while( i > 0)
    {
    	j = 1;
    	while( j <= rows - i)
		{
            cout << " ";
            j++;
        }
        k = 1;
        while( k <= i * 2 - 1)
        {
            cout << ch;
            k++;
        }
        cout << "\n";
        i--;
    }	
 	return 0;
}
Enter Diamond Star Pattern Row = 12
Enter Symbol for Diamond Pattern = #
Diamond Star Pattern
           #
          ###
         #####
        #######
       #########
      ###########
     #############
    ###############
   #################
  ###################
 #####################
#######################
 #####################
  ###################
   #################
    ###############
     #############
      ###########
       #########
        #######
         #####
          ###
           #

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.