How to print the ASCII values in Golang?

Go Programming Programming Server Side Programming

In this tutorial, we are going to learn how to find and print the ASCII value of any character or symbol in Golang. The ASCII stands for American Standard Code for Information Exchange which is a way to represent the characters, and symbols in numeric form.

Printing the ASCII value using specifier

Algorithm

STEP 1 − Declaring the variable of string type
STEP 2 − Initializing the variable.
STEP 3 − Running the for loop which is printing the ASCII value for each element in the string.

Example 1

In this example, we are going to print the ASCII value of the character using the %d specifier.


package main

// fmt package provides the function to print anything
import (
   "fmt"
)
func main() {

   // declaring the variable of string type using the var keyword
   var introduction string

   // initializing the introduction string
   introduction = "TutorialsPoint"
   fmt.Println("ASCII of ",introduction,"is")

   // printing the ASCII value of each character using %d specifier
   for i := 0; i < len(introduction); i++ {
      fmt.Printf("The ASCII value of %c is %d \n", introduction[i], introduction[i])
   }
   fmt.Println("(Printing the ASCII value using specifier)")
}

Output

ASCII of TutorialsPoint is
The ASCII value of T is 84
The ASCII value of u is 117
The ASCII value of t is 116
The ASCII value of o is 111
The ASCII value of r is 114
The ASCII value of i is 105
The ASCII value of a is 97
The ASCII value of l is 108
The ASCII value of s is 115
The ASCII value of P is 80
The ASCII value of o is 111
The ASCII value of i is 105
The ASCII value of n is 110
The ASCII value of t is 116
(Printing the ASCII value using specifier)

Description of code:

var introduction string − In this line, we are declaring the variable introduction of string type in which we will store the input from the user.
for i := 0; i < len(introduction); i++ {} − Running a for loop over the complete string from 0 till length of the string.
fmt.Printf("The ASCII value of %c is %d \n", introduction[i], introduction[i]) − Printing the ASCII value of each element in the string using the %d specifier

Printing the ASCII value using Tyoe Casting

Algorithm

STEP 1 − Declaring the variable of string type.
STEP 2 − Taking the input from the user by creating an object for the reader
STEP 3 − Running the for loop which is printing the ASCII value for each element in the string.

Example 2

In this example, we are going to print the ASCII value of the character using type casting.

package main

// fmt package provides the function to print anything
import (
   "bufio"
   "fmt"
   "os"
   "strings"
)
func main() {

   // declaring the variable of string type using the var keyword
   var dateOfBirth string
   fmt.Println("Can you please write down your Date of Birth?")
   
   // scanning the input by the user
   inputReader := bufio.NewReader(os.Stdin)
   dateOfBirth, _ = inputReader.ReadString('\n')
   
   // remove the delimiter from the string
   dateOfBirth = strings.TrimSuffix(dateOfBirth, "\n")
   
   // printing the ASCII value of each character using %d specifier
   for i := 0; i < len(dateOfBirth); i++ {
      fmt.Println("The ASCII value of", string(dateOfBirth[i]), "is", int(dateOfBirth[i]))
   }
   fmt.Println("(Printing the ASCII value using Type Casting)")
}

Output

Can you please write down your Date of Birth?
27/05/1993
The ASCII value of 2 is 50
The ASCII value of 7 is 55
The ASCII value of / is 47
The ASCII value of 0 is 48
The ASCII value of 5 is 53
The ASCII value of / is 47
The ASCII value of 1 is 49
The ASCII value of 9 is 57
The ASCII value of 9 is 57The ASCII value of 3 is 51
(Printing the ASCII value using Type Casting)

Description of code:

var introduction string − In this line, we are declaring the variable introduction of string type in which we will store the input from the user.
inputReader := bufio.NewReader(os.Stdin)

introduction, _ = inputReader.ReadString('\n') − Creating a reader object and taking input from the user.

for i := 0; i < len(introduction); i++ {} − Running a for loop over the complete string from 0 till length of the string.
fmt.Println("The ASCII value of", string(dateOfBirth[i]), "is", int(dateOfBirth[i])) − Printing the ASCII value of each element in the string using the typecasting concept like this int(dateOfBirth[i]).