Go Program to Print Hollow Diamond inside a Square Star Pattern

Write a Go program to print the hollow diamond star pattern inside a square pattern using for loop.

package main

import "fmt"

func main() {

	var i, j, k, l, row int

	fmt.Print("Enter Hollow Diamond inside a Square row = ")
	fmt.Scanln(&row)

	fmt.Println("Hollow Diamond inside a Square Star Pattern")

	for i = 1; i <= row; i++ {
		for j = i; j <= row; j++ {
			fmt.Printf("*")
		}
		for k = 1; k <= 2*i-2; k++ {
			fmt.Printf(" ")
		}
		for l = i; l <= row; l++ {
			fmt.Printf("*")
		}
		fmt.Println()
	}

	for i = 1; i <= row; i++ {
		for j = 1; j <= i; j++ {
			fmt.Printf("*")
		}
		for k = 2*i - 2; k < 2*row-2; k++ {
			fmt.Printf(" ")
		}
		for l = 1; l <= i; l++ {
			fmt.Printf("*")
		}
		fmt.Println()
	}
}
Go Program to Print Hollow Diamond inside a Square Star Pattern

This Go example prints the hollow diamond inside a square pattern of a given character.

package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {

	reader := bufio.NewReader(os.Stdin)

	var i, j, k, l, row int

	fmt.Print("Enter Hollow Diamond inside a Square row = ")
	fmt.Scanln(&row)

	fmt.Print("Character to Print in Hollow Diamond = ")
	ch, _, _ := reader.ReadRune()

	fmt.Println("Hollow Diamond inside a Square Star Pattern")

	for i = 1; i <= row; i++ {
		for j = i; j <= row; j++ {
			fmt.Printf("%c", ch)
		}
		for k = 1; k <= 2*i-2; k++ {
			fmt.Printf(" ")
		}
		for l = i; l <= row; l++ {
			fmt.Printf("%c", ch)
		}
		fmt.Println()
	}

	for i = 1; i <= row; i++ {
		for j = 1; j <= i; j++ {
			fmt.Printf("%c", ch)
		}
		for k = 2*i - 2; k < 2*row-2; k++ {
			fmt.Printf(" ")
		}
		for l = 1; l <= i; l++ {
			fmt.Printf("%c", ch)
		}
		fmt.Println()
	}
}
Enter Hollow Diamond inside a Square row = 14
Character to Print in Hollow Diamond = #
Hollow Diamond inside a Square Star Pattern
############################
#############  #############
############    ############
###########      ###########
##########        ##########
#########          #########
########            ########
#######              #######
######                ######
#####                  #####
####                    ####
###                      ###
##                        ##
#                          #
#                          #
##                        ##
###                      ###
####                    ####
#####                  #####
######                ######
#######              #######
########            ########
#########          #########
##########        ##########
###########      ###########
############    ############
#############  #############
############################

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.