Golang Program to Print X Star Pattern

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

Syntax

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

Example: Go Program Code to Print x Star Pattern Using a Single Function

Algorithm

• Step 1 ? Import the package fmt and strconv package.

• Step 2 ? Start function main ().

• Step 3 ? Declare and initialize the variables.

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

• Step 5 ? Print the result using fmt.Println ().

Example

// GOLANG PROGRAM TO PRINT X STAR PATTERN
package main

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

// start the function main()
func main() {
   fmt.Println("Golang Program to print X star pattern")

   // Declare the integer variables
   var i, a, number, row int

   // initialize the row variable
   row = 8

   // print the X star pattern
   fmt.Println("X Star Pattern")

   // Run an outer loop to iterate through rows with
   // structure for (i=1; i<= number; i++) (where number = row* 2 - 1)
   number = row*2 - 1

   // Use of For Loop
   // This loop starts when i = 1
   // executes till i<=number condition is true
   // post statement is i++
   for i = 1; i <= number; i++ {
      // Since each row contains exactly row * 2 - 1 columns.
      // Therefore, run inner loop as for (a=1; a<=number; a++)
      for a = 1; a <= number; a++ {
         // For the first diagonal i.e. when row and column number both
         // are equal, print star whenever if(i == a).
         // For the second diagonal i.e. stars are printed if(a == number - i + 1)
         if a == i || a == number-i+1 {
            fmt.Printf("*")
         }
         fmt.Printf(" ")
      }
      // PRINT THE RESULT
      fmt.Println()
   }
}

Output

Golang Program to print X star pattern
X 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().

• Declare the four integer variables i, a, number and row. Initialize the row variable to an integer value you want for the number of rows of the star pattern.

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

• And last printing the result on the screen using fmt.Println.

Conclusion

We have successfully compiled and executed the Golang program code to print X star pattern in the above two examples.