Go – Sum of Two Numbers

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

The basic syntax for adding two numbers in Go is:

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var sum = num1 + num2

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

Example 1: Sum of Two Numbers Using Variables

In this example, we will define two integer variables, add them, and store the result in a third variable. Finally, we will 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

    // Find the sum
    sum := num1 + num2

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

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 calculates the sum of the two 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 Two Numbers Using Variables

Example 2: Sum of Two Numbers Using a Function

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

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

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

Explanation of Program

1. A function findSum is defined, which takes two integer parameters a and b and returns their sum.
2. Inside the main function, two integers, num1 and num2, are initialized with values 15 and 25.
3. The findSum function is called with num1 and num2 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 Two Numbers Using a Function