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Golang program to reverse the given number using goto statement

Here, we are going to learn how to reverse the given number using goto statement in Golang (Go Language)?
Submitted by Nidhi, on March 01, 2021

Problem Solution:

In this program, we will read an integer number and then reverse the number and print the result on the console screen.

Program/Source Code:

The source code to reverse the given number using the goto statement is given below. The given program is compiled and executed successfully.

// Golang program to reverse given number 
// using the goto statement

package main

import "fmt"

func main() {
	var num int = 0
	var rev int = 0
	var rem int = 0

	fmt.Print("Enter Number: ")
	fmt.Scanf("%d", &num)

MyLbl:

	rem = num % 10
	rev = rev*10 + rem
	num = num / 10

	if num > 0 {
		goto MyLbl
	}
	
	fmt.Printf("Reverse of number: %d", rev)
}

Output:

Enter Number: 12345
Reverse of number: 54321

Explanation:

Here, 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.

In the main() function, we created three variables num, rev, rem that are initialized with 0 and also created a label MyLbl.

MyLbl:
        
    rem = num % 10
    rev = rev*10+rem
    num = num / 10
        
    if(num>0){
        goto MyLbl
    }
    fmt.Printf("Reverse of number: %d",rev)

In the above code, we found the reverse of the given number by finding the remainder of the number. Here, we divided the number till it becomes 0. After that, we printed the result on the console screen.

Golang goto Statement Programs »



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