Answer:
Following are the program in java language that is mention below
Explanation:
import java.util.*; // import package
public class Half_XmasTree // main class
{
public static void main(String args[]) // main method
{
int k,i1,j1; // variable declaration
Scanner sc2=new Scanner(System.in); // create the object of scanner
System.out.println("Enter the Number of rows : ");
k=sc2.nextInt(); // Read input by user
for(i1=0;i1<k;i1++) //iterating the loop
{
for(j1=0;j1<i1;j1++) // iterating the loop
System.out.print(" ");
for(int r=k-i1;r>0;r--) //iterating loop
System.out.print("*"); // print *
System.out.println();
}
}
}
Output:
Following are the attachment of output
Following are the description of program
The Half_XmasTree program illustrates the use of loops
Loops are used for operations that must be repeated until a certain condition is met.
The Half_XmasTree program written in Java where comments are used to explain each action is as follows:
import java.util.*;
public class Half_XmasTree{
public static void main(String args[]){
//This creates a Scanner object
Scanner input =new Scanner(System.in);
//This prompts the user for the number of rows
System.out.print("Number of rows: ");
//This gets input the user for the number of rows
int rows=input.nextInt();
//The following iteration prints the half x-mas tree
for(int i=0; i<rows;i++){
for(int j=0;j<i;j++){
System.out.print(" ");
}
for(int r=rows-i;r>0;r--){
System.out.print("*");
}
System.out.println();
}
}
}
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