Go Program to Print Pascal Triangle

Write a Go program to print the pascal triangle number pattern using for loop.

package main

import (
	"fmt"
	"strconv"
)

func main() {

	var i, j, row, number int

	fmt.Print("Enter Pascals Number Triangle Pattern Rows = ")
	fmt.Scanln(&row)

	fmt.Println("**** Pascals Number Triangle Pattern ****")

	for i = 0; i < row; i++ {
		number = 1
		fmt.Printf("%"+strconv.Itoa((row-i)*2)+"s", "")
		for j = 0; j <= i; j++ {
			fmt.Printf("%4d", number)
			number = number * (i - j) / (j + 1)
		}
		fmt.Println()
	}
}
Go Program to Print Pascal Triangle

It is another way of writing a golang program to print the pascals triangle of numbers. For more number pattern examples, please refer to the Go Number Pattern programs article.

package main

import "fmt"

func factorialCal(num int) int {
	if num == 0 || num == 1 {
		return 1
	}
	return num * factorialCal(num-1)
}
func main() {

	var i, j, num int

	fmt.Print("Rows to Print the Pascal Triangle = ")
	fmt.Scanln(&num)

	fmt.Println("\nPascal Triangle")
	for i = 0; i < num; i++ {
		for j = 1; j <= num-i-2; j++ {
			fmt.Print(" ")
		}
		for j = 0; j <= i; j++ {
			fmt.Printf("%d ", factorialCal(i)/(factorialCal(j)*factorialCal(i-j)))
		}
		fmt.Println()
	}
}
Rows to Print the Pascal Triangle = 8

Pascal Triangle
      1 
     1 1 
    1 2 1 
   1 3 3 1 
  1 4 6 4 1 
 1 5 10 10 5 1 
1 6 15 20 15 6 1 
1 7 21 35 35 21 7 1

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