Go – Sum of Three Numbers

In this tutorial, we will learn how to find the sum of three 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 Sum of Three Numbers

The basic syntax for adding three numbers in Go is:

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var sum = num1 + num2 + num3

Here, num1, num2, and num3 are the numbers to be added, and sum holds the result of the addition.

Example 1: Sum of Three Numbers Using Variables

In this example, we will define three integer variables, add them, and store the result in another variable. Finally, we will print the result to the console.

Program – example.go

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package main

import "fmt"

func main() {
    // Declare three variables
    num1 := 10
    num2 := 20
    num3 := 30

    // Find the sum
    sum := num1 + num2 + num3

    // Print the result
    fmt.Println("The sum of", num1, ",", num2, "and", num3, "is", sum)
}

Explanation of Program

1. We use the := syntax to declare and initialize three integer variables, num1, num2, and num3, with values 10, 20, and 30, respectively.
2. The expression num1 + num2 + num3 calculates the sum of the three variables.
3. The result is stored in the sum variable.
4. The fmt.Println function is used to print the result to the console, along with descriptive text.

Output

Go Example to find the Sum of Three Numbers Using Variables

Example 2: Sum of Three Numbers Using a Function

In this example, we will write a function to calculate the sum of three 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 sum of three numbers
func findSum(a int, b int, c int) int {
    return a + b + c
}

func main() {
    // Call the function with three numbers
    num1 := 15
    num2 := 25
    num3 := 35
    sum := findSum(num1, num2, num3)

    // Print the result
    fmt.Println("The sum of", num1, ",", num2, "and", num3, "is", sum)
}

Explanation of Program

1. A function findSum is defined, which takes three integer parameters a, b, and c, and returns their sum.
2. Inside the main function, three integers, num1, num2, and num3, are initialized with values 15, 25, and 35.
3. The findSum function is called with num1, num2, and num3 as arguments, and the result is stored in the sum variable.
4. The fmt.Println function is used to print the result to the console, along with descriptive text.

Output

Go Example to find the Sum of Three Numbers Using a Function