Golang Program To Print 8 Star Pattern

In this tutorial, we will learn how to print 8−star pattern using Go programming language.

Syntax

for initialization; condition; update {
   statement(s)
}

Example: Golang Program Code To Print 8 Star Pattern Using A Single Function

Algorithm

• Step 1 − Import the package fmt.

• Step 2 − Start the function main ().

• Step 3 − Declare and initialize the variable.

• Step 4 − Use of for loop with condition and incrementor.

• Step 5 − Print the result using fmt.Printf ().

Example

// GOLANG PROGRAM TO PRINT 8 STAR PATTERN
package main

// fmt package provides the function to print anything
import "fmt"

// start the function main ()
// this function is the entry point of the executable program
func main() {

   // Declare the integer variable
   var rows int
   rows = 8
   
   // Scanln() function scans the input, reads and stores
   //the successive space-separated values into successive arguments
   fmt.Scanf("%d", &rows)
   fmt.Printf("GOLANG PROGRAM TO PRINT 8 STAR PATTERN\n")
   
   // Use of For Loop
   // This loop starts when i <= rows*2-1 GOLANG PROGRAM TO PRINT 8 STAR PATTERN
   // executes till j<=rows condition is satisfied
   // post statement is j++
   i := 1
   for i <= rows*2-1 {
      if i == 1 || i == rows || i == rows*2-1 {
         j := 1
         for j <= rows {
            if j == 1 || j == rows {
               fmt.Printf(" ")
            } else {
               fmt.Printf("*")
            }
            j++
         }
      } else {
         // This loop starts when k <= rows
         // executes till one of the conditions satisfies k==1 / k == rows
         // post statement is k++
         k := 1
         for k <= rows {
            if k == 1 || k == rows {
               fmt.Printf("*")
            } else {
               fmt.Printf(" ")
            }
            k++
         }
      }
      fmt.Printf("\n")
      i++
   }
   // print the result using fmt.Printf () function
}

Output

GOLANG PROGRAM TO PRINT 8 STAR PATTERN
******
*    *
*    *
*    *
*    *
*    *
*    *
******
*    *
*    *
*    *
*    *
*    *
*    *
******

Description Of The Code

• In the above program, we first declare the package main.

• We imported the fmt package that includes the files of package fmt.

• Now start the function main () and this function is the entry point of the executable program. It does not take any argument nor return anything.

• Declare the four integer variable rows and initialize the rows variable to an integer value you want for the number of rows of the 8 star pattern. Here, fmt.Scanln () function is used to read and store the rows value.

• Using for loop − The condition is given inside an if statement and stop execution is mentioned once the condition is right.

• And finally printing the result in the form of a diamond shape on the screen using fmt.Printf () function.

Conclusion

We have successfully compiled and executed the Golang program code to print 8 star pattern in the above example.