Program to Print Arrow Star Pattern
In this article we are going to see how to print the arrow star pattern.
Example-1 When size value=6 * ** *** **** ***** ****** ******* ****** ***** **** *** ** *
Example-2 When size value=5 * ** *** **** ***** ****** ***** **** *** ** *
Now, let’s see the actual program to print it.
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Approach:
- Enter size and store it in an integer variable
size. - Take first for loop to print all rows.
- Take second/inner for loop to print column values.
- Then go on printing the star symbols according to the iteration.
JAVA Code:
Method-1 : Static Star Character
import java.util.Scanner;
class Main
{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
System.out.print("Size : ");
//Taking size as input from user
int r, c,k, size=scan.nextInt();
for (r = -size; r <= size; r++)
{//Outer for loop
k = r;
if (k < 0)
{//To calculate the number of stars printed
k *= -1;
}
for (c = 0; c <= size; c++)
{//Inner Loop to print star and space
if (c < k)
System.out.print(" ");
else
System.out.print("*");
}
System.out.println();
}
}
}
Output: Size : 5 * ** *** **** ***** ****** ***** **** *** ** *
Method-2 : User Input Character
import java.util.Scanner;
class Main
{
public static void main(String[] args)
{
int r, c,k,size;
char ch;
Scanner scan = new Scanner(System.in);
System.out.print("Size : ");
//Taking size as input from use
size=scan.nextInt();
System.out.print("Character : ");
//Taking size as input from use
ch=scan.next().charAt(0);
for (r = -size; r <= size; r++)
{//Outer for loop
k = r;
if (k < 0)
{//To calculate the number of stars printed
k *= -1;
}
for (c = 0; c <= size; c++)
{//Inner Loop to print star and space
if (c < k)
System.out.print(" ");
else
System.out.print(ch);
}
System.out.println();
}
}
}
Output: Size : 5 Character : < < << <<< <<<< <<<<< <<<<<< <<<<< <<<< <<< << <
C Code:
#include <stdio.h>
int main(int argc, char const *argv[])
{
printf("Size : ");
//Taking size as input from user
int size, r, c, k;
scanf("%d", &size);
for (r = -size; r <= size; r++)
{//inner loop
k = r;
if (k < 0)
{ //To calculate the number of stars printed
k *= -1;
}
for (c = 0; c <= size; c++)
{ //Inner Loop to print star and space
if (c < k)
printf(" ");
else
printf("*");
}
printf("\n");
}
return 0;
}
Output: Size : 5 * ** *** **** ***** ****** ***** **** *** ** *
C++ Code:
#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
cout << "Size : ";
//Taking size as input from user
int size, r, c, k;
cin >> size;
for (r = -size; r <= size; r++)
{ //inner loop
k = r;
if (k < 0)
{ //To calculate the number of stars printed
k *= -1;
}
for (c = 0; c <= size; c++)
{ //Inner Loop to print star and space
if (c < k)
cout << " ";
else
cout << "*";
}
//Prints a new line
cout << endl;
}
return 0;
}
Output: Size : 5 * ** *** **** ***** ****** ***** **** *** ** *
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