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Golang program to swap two integer numbers

Here, we are going to learn how to swap two integer numbers in Golang (Go Language)?
Submitted by Nidhi, on February 15, 2021

Problem Solution:

In this program, we will swap two integer numbers and print values of swapped variables on the console screen.

Program/Source Code:

The source code to swap two integer numbers is given below. The given program is compiled and executed successfully.

//Golang program to swap two integer numbers.

package main
import "fmt"

func main() {
    //Declare 3 integer type variables
    var num1 int =10
    var num2 int =20
    var num3 int =0
    
    fmt.Println("Numbers before swapping:") 
    fmt.Println("Num1: ",num1) 
    fmt.Println("Num2: ",num2) 
    
    num3=num1
    num1=num2
    num2=num3
    
    fmt.Println("Numbers after swapping:") 
    fmt.Println("Num1: ",num1) 
    fmt.Println("Num2: ",num2) 
}

Output:

Numbers before swapping:
Num1:  10
Num2:  20
Numbers after swapping:
Num1:  20
Num2:  10

In the above program, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt package that includes the files of package fmt then we can use a function related to the fmt package.

Now, we come to the main() function. The main() function is the entry point for the program. Here, we declared three variables num1, num2, num3 that are initialized with 10, 20, 0 respectively.

num3 = num1
num1 = num2
num2 = num3

In the above code, we interchanged the values of the num1 and num2 variable. After that, we printed the swapped variables using Println() function on the console screen.

Golang Basic Programs »



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