Go – Average of Two Numbers

In this tutorial, we will learn how to calculate the average of two numbers in the Go programming language (Golang). We’ll explore two methods: using variables directly and implementing a function for reusability. Each example will include the syntax, a program, and a detailed explanation to ensure a clear understanding of the concepts.

Syntax to Find Average of Two Numbers

The basic syntax for calculating the average of two numbers in Go is:

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var average = (num1 + num2) / 2

Here, num1 and num2 are the numbers, and average holds the result of their average calculation. Note that we divide the sum of the two numbers by 2 to find the average.

Example 1: Average of Two Numbers Using Variables

In this example, we will define two integer variables, calculate their sum, divide it by 2 to find the average, and print the result to the console.

Program – example.go

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package main

import "fmt"

func main() {
    // Declare two variables
    num1 := 10
    num2 := 20

    // Calculate the average
    average := (num1 + num2) / 2

    // Print the result
    fmt.Println("The average of", num1, "and", num2, "is", average)
}

Explanation of Program

1. We use the := syntax to declare and initialize two integer variables, num1 and num2, with values 10 and 20, respectively.
2. The expression (num1 + num2) / 2 calculates the average of the two variables by first adding them and then dividing by 2.
3. The result is stored in the average variable.
4. The fmt.Println function is used to print the result to the console, along with descriptive text.

Output

Go Example to find Average of Two Numbers Using Variables

Example 2: Average of Two Numbers Using a Function

In this example, we will write a function to calculate the average of two numbers. This approach makes the code reusable, as the function can be called multiple times with different inputs.

Program – example.go

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package main

import "fmt"

// Function to find the average of two numbers
func findAverage(a int, b int) int {
    return (a + b) / 2
}

func main() {
    // Call the function with two numbers
    num1 := 15
    num2 := 25
    average := findAverage(num1, num2)

    // Print the result
    fmt.Println("The average of", num1, "and", num2, "is", average)
}

Explanation of Program

1. A function findAverage is defined, which takes two integer parameters a and b, calculates their sum, and divides it by 2 to find the average.
2. Inside the main function, two integers, num1 and num2, are initialized with values 15 and 25.
3. The findAverage function is called with num1 and num2 as arguments, and the result is stored in the average variable.
4. The fmt.Println function is used to print the result to the console, along with descriptive text.

Output

Go Example to find Average of Two Numbers Using a Function