Golang Program To Print Mirror Lower Star Triangle Pattern

In this tutorial, we will learn how to print the mirror lower star triangle pattern using G programming language.

Syntax

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

In the code, we use the for loop to repeat a block of code until the specified condition is met.

Example: Golang Program to Print Mirror Lower Star Triangle pattern using One Single Function

Algorithm

• Step 1 − Import the package fmt.

• Step 2 − Start the 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 MIRROR LOWER STAR TRIANGLE PATTERN
package main

// fmt package provides the function to print anything
import "fmt"
func main() {
   fmt.Println("GOLANG PROGRAM TO PRINT MIRROR LOWER STAR TRIANGLE PATTERN")
   
   // declare the variables
   var i int
   var j int
   var row int
   
   // initialize the variables
   row = 8
   
   //Outer loop 1
   // prints the first half triangle GOLANG PROGRAM TO PRINT MIRROR LOWER STAR TRIANGLE PATTERN
   for i = 0; i <= row; i++ {
   
      //inner loop 1
      for j = 1; j < i; j++ {
         //prints space between two stars
         fmt.Print(" ")
      }
      
      // Inner loop 2
      for j = i; j <= row; j++ {
         // Print star
         fmt.Print("*" + " ")
      }
      
      // Ending line after each row
      fmt.Println()
   }
   // Outer loop 2
   // prints the second half triangle
   for i = row - 1; i >= 0; i-- {
   
      // Inner loop 1
      for j = 0; j < i; j++ {
         // Print whitespace
         fmt.Print(" ")
      }
      
      // Inner loop 2
      for j = i; j <= row-1; j++ {
         // Print star
         fmt.Print("*" + " ")
      }
      
      // Ending line after each row
      fmt.Println()
   }
}

Output

GOLANG PROGRAM TO PRINT MIRROR LOWER STAR TRIANGLE 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 three integer variables i, j and row. Initialize the row variable to an integer value you want for the number of rows of the lower mirror star triangle 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 using fmt.Println().

Conclusion

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