Go Program to Find the Cube of a Number

Introduction

Finding the cube of a number involves multiplying the number by itself twice (i.e., raising the number to the power of 3). In Go, you can calculate the cube of a number using simple arithmetic operations. This guide will walk you through writing a Go program that calculates the cube of a user-provided number.

Problem Statement

Create a Go program that:

Prompts the user to enter a number.
Calculates the cube of the given number.
Displays the result.

Example:

Input: 3
Output: "The cube of 3 is 27"

Solution Steps

Input the Number: Use fmt.Scanln() to take a number as input from the user.
Calculate the Cube: Multiply the number by itself twice to calculate the cube.
Display the Result: Use fmt.Println() to display the calculated cube.

Go Program

package main

import (
	"fmt"
)

func main() {
	// Step 1: Declare a variable to store the number
	var number int

	// Step 2: Prompt the user to enter the number
	fmt.Print("Enter an integer number: ")
	fmt.Scanln(&number)

	// Step 3: Calculate the cube of the number
	cube := number * number * number

	// Step 4: Display the result
	fmt.Printf("The cube of %d is %d\n", number, cube)
}

Explanation

Step 1: Declare a Variable

A variable number is declared to store the integer input provided by the user.

Step 2: Input the Number

The program prompts the user to enter an integer number using fmt.Scanln().

Step 3: Calculate the Cube

The cube of the number is calculated by multiplying the number by itself twice: number * number * number. The result is stored in the variable cube.

Step 4: Display the Result

The program displays the result using fmt.Printf(), showing the original number and its cube.

Output Example

Example 1:

Enter an integer number: 3
The cube of 3 is 27

Example 2:

Enter an integer number: 5
The cube of 5 is 125

Example 3:

Enter an integer number: -4
The cube of -4 is -64

Conclusion

This Go program demonstrates how to calculate the cube of an integer by multiplying the number by itself twice. The program handles both positive and negative numbers, providing a straightforward way to compute the cube of any integer. Understanding how to perform basic arithmetic operations in Go is essential for solving many programming problems.