Go Program to Print Floyd’s Triangle

Write a Go Program to Print Floyd’s Triangle. In this Floyd’s Triangle example, the first for loop iterates from start to end. The second for loop (for j = 1; j <= i; j++) iterates from 1 to i value. Within the loop, we are printing the number and increment the number.

package main

import "fmt"

func main() {

    var i, j, rows int
    number := 1

    fmt.Print("Enter Total Rows to Print Floyd's Triangle = ")
    fmt.Scanln(&rows)

    fmt.Println("Floyd's Triangle")
    for i = 1; i <= rows; i++ {
        for j = 1; j <= i; j++ {
            fmt.Printf("%d ", number)
            number++
        }
        fmt.Println()
    }
}

This Golang program allows entering the starting number and prints the Floyd’s Triangle from that number.

package main

import "fmt"

func main() {

    var i, j, rows int
    var number int

    fmt.Print("Enter Total Rows to Print Floyd's Triangle = ")
    fmt.Scanln(&rows)

    fmt.Print("Enter The Starting Number = ")
    fmt.Scanln(&number)

    fmt.Println("Floyd's Triangle")
    for i = 1; i <= rows; i++ {
        for j = 1; j <= i; j++ {
            fmt.Printf("%d ", number)
            number++
        }
        fmt.Println()
    }
}

Enter Total Rows to Print Floyd's Triangle = 7
Enter The Starting Number = 10
Floyd's Triangle
10 
11 12 
13 14 15 
16 17 18 19 
20 21 22 23 24 
25 26 27 28 29 30 
31 32 33 34 35 36 37 

In this Go Floyd’s Triangle example, we replaced the number with a star symbol.

package main

import "fmt"

func main() {

    var i, j, rows int

    fmt.Print("Enter Total Rows to Print Floyd's Triangle = ")
    fmt.Scanln(&rows)

    fmt.Println("Floyd's Triangle")
    for i = 1; i <= rows; i++ {
        for j = 1; j <= i; j++ {
            fmt.Print("* ")
        }
        fmt.Println()
    }
}

Enter Total Rows to Print Floyd's Triangle = 10
Floyd's Triangle
* 
* * 
* * * 
* * * * 
* * * * * 
* * * * * * 
* * * * * * * 
* * * * * * * * 
* * * * * * * * * 
* * * * * * * * * *