Java Program to Print Cross Symbol Star Pattern

Program to Print Cross Symbol Star Pattern

In this article we are going to see how to print the cross symbol star pattern.

Example-1

When size value=5
*   *
 * *
  *
 * *
*   *

Example-2:

When size value=10
*        *
 *      *
  *    *
   *  *
    **
    **
   *  *
  *    *
 *      *
*        *

Now, let’s see the actual program to print it.

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Approach:

Enter the size of the square and store it in an integer variable size.
Take outer for loop to iterate the rows.
Take second/inner for loop to iterate the columns.
Then go on printing the star symbols according to the iteration.

JAVA Code:

Static Star Character
User Input Character

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, size=scan.nextInt();

     //Outer loop
    for (r = 0; r < size; ++r)
    {
        //Outer for loop
        for (c = 0; c < size; ++c)
        {
            //Inner for loop
            if(r==c || c==(size-r-1))
                //Condition to check to print star
                System.out.print("*");
            else
                System.out.print(" ");
        }
            //Prints a new line
            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,size;
        Scanner scan = new Scanner(System.in);
        System.out.print("Size : ");
        //Taking size as input from user
        size=scan.nextInt();
        System.out.print("Character : ");
        //Taking character as input from user
        char ch=scan.next().charAt(0);

     //Outer loop
    for (r = 0; r < size; ++r)
    {
        //Outer for loop
        for (c = 0; c < size; ++c)
        {
            //Inner for loop
            if(r==c || c==(size-r-1))
                //Condition to check to print star
                System.out.print(ch);
            else
                System.out.print(" ");
        }
            //Prints a new line
            System.out.println();
        }
    }  
}

Output

Size : 5
Character : x
x   x
 x x
  x
 x x
x   x

Explanation :

Let’s understand the program by going through the detailed explanation.

We have taken size value as 5.

Iteration-1
r=0 (passes the first for loop condition) because it will execute until r<size
Now inner for loop will print a star for r==c followed by 3 spaces from else statement, then another star for c==(size-r-1).

*   *

Iteration-2
r=1 (passes the first for loop condition) because it will execute until r< size
Now inner for loop will print one space from else statement then a star for r==c followed by 1 space from else statement, then another star for c==(size-r-1) followed by space.

* *

Iteration-3
r=2 (passes the first for loop condition) because it will execute until r< size
Now inner for loop will print 2 spaces then a star for r==c and remaining spaces.

Iteration-4

r=3 (passes the first for loop condition) because it will execute until r< size
Now inner for loop will print one space from else statement then a star for c==(size - r -1) followed by 1 space from else statement, then another star for r==c followed by space.

* *

Iteration-5

r=4 (passes the first for loop condition) because it will execute until r< size
Now inner for loop will print a star for c==(size-r-1) followed by 3 spaces from else statement, then another star for r==c.

*   *

Now r=5, so first for loop condition will fail. So next for loop will not be executed any more.

Now, after end of all iteration we will see the complete pattern is printed on the output screen like this.

*   *
 * *
  *
 * *
*   *

C Code:

#include <stdio.h>
int main(int argc, char const *argv[])
{
    printf("Size : ");
    //Taking size of the square as input from user
    int size, r, c;
    scanf("%d", &size);

    //Outer loop
    for (r = 0; r < size; ++r)
    {
        //Outer for loop
        for (c = 0; c < size; ++c)
        {
            //Inner for loop
            if (r == c || c == (size - r - 1))
                //Condition to check to print star
                printf("*");
            else
                printf(" ");
        }
        //Prints a new line
        printf("\n");
    }
    return 0;
}

Output

Size : 5
*   *
 * *
  *
 * *
*   *

C++ Code:

#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
    cout << "Size : ";
    //Taking height Of Tree as input from user
    int size, r, c;
    cin >> size;

    //Outer loop
    for (r = 0; r < size; ++r)
    {
        //Outer for loop
        for (c = 0; c < size; ++c)
        {
            //Inner for loop
            if (r == c || c == (size - r - 1))
                //Condition to check to print star
                cout << "*";
            else
                cout << " ";
        }
        cout << endl;
    }
    return 0;
}

Output

Size : 5
*   *
 * *
  *
 * *
*   *

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