Q:

Golang program to check the given number is a Prime Number or not using goto statement

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mahmoud2506
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2022-05-27
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In this program, we will read an integer number and check the entered number is Prime number or not using the goto statement.

Prime Number: A prime number is a number that is divisible by 1 and itself. Number 2 is the first PRIME number.

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mahmoud2506
2022-05-27
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Program/Source Code:

The source code to print the Fibonacci series using the goto statement is given below. The given program is compiled and executed successfully.

// Golang program to check given number is a PRIME number or not
// using the goto statement

package main

import "fmt"

func main() {
	var num int = 0
	var count int = 1
	var flag int = 0
	fmt.Print("Enter Number: ")
	fmt.Scanf("%d", &num)

Repeat:
	count = count + 1

	if num%count == 0 {
		flag = 1
		goto OUT
	}

	if count < num/2 {
		goto Repeat
	}
OUT:
	if flag == 1 {
		fmt.Print("Given number is not PRIME number")
	} else {
		fmt.Print("Given number is PRIME number")
	}
}

Output:

RUN 1:
Enter Number: 13
Given number is PRIME number

RUN 2:
Enter Number: 15
Given number is not PRIME number

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, count, flag that are initialized with 0, 1, 0 respectively and also created a label Repeat. Here, we checked entered a number is a prime number or not using the goto statement and then print the appropriate message on the console screen.

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