Java Program to Print Alphabet C Star Pattern

Program to Print Alphabet C Star Pattern

In this article we are going to see how to print the alphabet C star pattern

Example-1

For rows = 8

********
*
*
*
*
*
*
********

Example-2

For rows = 5

*****
*
*
*
*****

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

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Approach:

Enter total row and store it in an integer variable rows.
Take one outer for loop to iterate the rows and one inner loop to iterate the columns.
Print stars where conditions matches else continue.

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);
    
    //Taking size as input from user
    System.out.print("Rows : ");
    int rows = scan.nextInt();
    
    for (int r = 0; r < rows; r++) //Outer Loop
    { 
        System.out.print("*");
        for (int c = 0; c < rows - 1; c++) //Inner Loop
        { 
            if (r == 0 || r == rows - 1)
                System.out.print("*");
            else
                continue;
        }
        System.out.println();
        //Prints a newline
    }
  }
}

Output

Rows : 5

*****
*
*
*
*****

Method-2: User Input Character

import java.util.Scanner;

class Main
{
  public static void main(String[] args) 
  {
    Scanner scan = new Scanner(System.in);
    
    //Taking size as input from user
    System.out.print("Rows : ");
    int rows = scan.nextInt();
    
    //Taking any random character as input from user
    System.out.print("Character : ");
    char any_char = scan.next().charAt(0);
    
    for (int r = 0; r < rows; r++) //Outer Loop
    { 
        System.out.print(any_char);
        for (int c = 0; c < rows - 1; c++) //Inner Loop
        { 
            if (r == 0 || r == rows - 1)
                System.out.print(any_char);
            else
                continue;
        }
        System.out.println();
        //Prints a newline
    }
  }
}

Output:

Rows : 5
Character : c

ccccc
c
c
c
ccccc

Explanation :

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

We have taken rows value as 5.

Iteration-1
r=0, goes into the inner loop prints five stars , one from the outer loop and other four as r==0 .

*****

Iteration-2
r=1, goes into the inner loop prints one star from the loop iteration.

Iteration-3
r=2, goes into the inner loop prints one star from the loop iteration.

Iteration-4

r=3, goes into the inner loop prints one star from the loop iteration.

Iteration-5

r=4, goes into the inner loop prints five stars , one from the outer loop and other four as r== rows-1 .

*****

After this r value equals rows i.e. 5 so program will come out of the loop.

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[])
{
    int rows;
    printf("Rows : ");
    scanf("%d", &rows);
    //Taking rows as input from user
    int r, c;
    for (r = 0; r < rows; r++)//Outer Loop
    { 
        printf("*");
        for (c = 0; c < rows - 1; c++) //Inner Loop
        { 
            if (r == 0 || r == rows - 1)
                printf("*");
            else
                continue;
        }
        printf("\n");
        //Prints a newline
    }
    return 0;
}

Output:

Rows : 5

*****
*
*
*
*****

C++ Code:

#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
    int rows;
    cout << "Rows : ";
    cin >> rows;
    //Taking rows as input from user
    int r, c;
    for (r = 0; r < rows; r++)
    { //Outer Loop
        cout << "*";
        for (c = 0; c < rows - 1; c++)
        { //Inner Loop
            if (r == 0 || r == rows - 1)
                cout << "*";
            else
                continue;
        }
        cout << endl;
        //Prints a newline
    }
    return 0;
}

Output:

Rows : 5

*****
*
*
*
*****

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