Golang program to print the minimum number of bits required to represent an 8, 16, 32, 64 bits number

Program/Source Code:

The source code to print the minimum number of bits required to represent an 8, 16, 32, 64 bits number is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Golang program to print the minimum number of bits
// required to represent an 8,16,32, 64 bits number

package main

import (
	"fmt"
	"math/bits"
)

func main() {
	var num1 uint8 = 10
	var num2 uint16 = 20
	var num3 uint32 = 30
	var num4 uint64 = 40

	fmt.Printf("Binary number: %08b\n", num1)
	fmt.Printf("Minimum number of bits to represent a number: %d\n\n", bits.Len8(num1))

	fmt.Printf("Binary number: %016b\n", num2)
	fmt.Printf("Minimum number of bits to represent a number: %d\n\n", bits.Len16(num2))

	fmt.Printf("Binary number: %032b\n", num3)
	fmt.Printf("Minimum number of bits to represent a number: %d\n\n", bits.Len32(num3))

	fmt.Printf("Binary number: %064b\n", num4)
	fmt.Printf("Minimum number of bits to represent a number: %d\n\n", bits.Len64(num4))
}

Output:

Binary number: 00001010
Minimum number of bits to represent a number: 4

Binary number: 0000000000010100
Minimum number of bits to represent a number: 5

Binary number: 00000000000000000000000000011110
Minimum number of bits to represent a number: 5

Binary number: 0000000000000000000000000000000000000000000000000000000000101000
Minimum number of bits to represent a number: 6

Explanation:

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 required packages to predefined functions.

In the main() function, we created 4 integer variables with the different numbers of bits with an initial value of 0. Then we got the minimum number of bits required to represent the number for all numbers using the inbuilt function of the bits package and printed the result on the console screen.