Program to Print the Hollow Half Pyramid Star Pattern

SOURAV KUMAR PATRA August 08, 2020

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Problem statement:- Program to Print the Hollow Half Pyramid Star Pattern.

 Data requirement:-

   Input Data:- row_size

  Output Data:- *

  Additional Data:-in or inn(for python), out

Program in C

Here is the source code of the C Program to Print the Hollow Half Pyramid Star Pattern.

Code:

#include<stdio.h>
int main()
{
    int out,in;
    printf("Enter the row size:");
    int row_size;
    scanf("%d",&row_size);
        for(out=1;out<=row_size;out++)
       {
           for(in=1;in<=row_size;in++)
           {
               if(in==1 || out==in || out==row_size)
               {
    printf("*");
     }
     else
         {
             printf(" ");
         }
}
        printf("\n");
}
}


Input/Output:
Enter the row size:5
*
**
* *
*   *
*****

Program in C++

Here is the source code of the C++ Program to Print the Hollow Half Pyramid Star Pattern.

Code:

#include<iostream>
using namespace std;
int main()
{
    cout<<"Enter the row size:";
    int row_size;
    cin>>row_size;
    int in,out,p;
      for(out=1;out<=row_size;out++)
       {
           for(in=1;in<=row_size;in++)
           {
               if(in==1 || out==in || out==row_size)
               {
               cout<<"*";
                 }
               else
               {
                 cout<<" ";
               }
             }
            cout<<"\n";
     }
}

Input/Output:
Enter the row size:6
*
**
* *
*  *
*    *
******
Program in Java

Here is the source code of the Java Program to Print the Hollow Half Pyramid Star Pattern.

Code:

import java.util.Scanner;
public class StarPattern18 {

public static void main(String[] args) {
Scanner cs=new Scanner(System.in);
        System.out.println("Enter the row size:");
       int out,in;
       int row_size=cs.nextInt();
       for(out=1;out<=row_size;out++)
       {
           for(in=1;in<=row_size;in++)
           {
               if(in==1 || out==in || out==row_size)
               {
                  System.out.printf("*");
               }
               else
               {
                System.out.printf(" ");    
               }
           }
           System.out.println(); 
       }
       cs.close();
}
}

Input/Output:
Enter the row size:
5
*    
**   
* *  
*   * 
*****

Program in Python

Here is the source code of the Python Program to Print the Hollow Half Pyramid Star Pattern.

Code:

row_size=int(input("Enter the row size:"))
print_control_x=row_size//2+1
for out in range(1,row_size+1):
    for inn in range(1,row_size+1):
        if inn==1 or out==inn or out==row_size:
            print("*",end="")
        else:
            print(" ", end="")
    print("\r")

Input/Output:
Enter the row size:7
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**     
* *    
*  *   
*   *  
*     * 
*******   
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1 Comments

  1. UnknownFebruary 17, 2022 at 1:47 AM

    #include
    #include

    using namespace std;

    int main(){
    int n = 5;
    cout<<"*"<<"\n";
    cout<<"\n";
    for(int i=0; i<n-2; i++){
    cout<<"*";
    for (int j=0; j<i; j++){
    cout<<" ";
    }
    cout<<"*"<<"\n";
    cout<<"\n";
    }
    for (int k=0; k<n; k++){
    cout<<"*";
    }
    }

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