Write a Golang program to swap two numbers without using a third variable

Approach to solve this problem

• Step 1: Define a function that accepts two numbers, type is int.
• Step 2: Find b = a + b;
• Step 3: Then a = b – a and b = b – a

Program

Live Demo

package main import "fmt" func swap(a, b int){    fmt.Printf("Before swapping, numbers are %d and %d\n", a, b)    b = a + b    a = b - a    b = b - a    fmt.Printf("After swapping, numbers are %d and %d\n", a, b) } func main(){    swap(23, 45)    swap(56, 100) }

Output

Before swapping, numbers are 23 and 45 After swapping, numbers are 45 and 23 Before swapping, numbers are 56 and 100 After swapping, numbers are 100 and 56