Swift Program to Print the ASCII values

This tutorial will discuss how to write a Swift program to print the ASCII values.

ASCII is known as American Standard Code for Information Interchange. In electronic communication, it is a character encoding standard to represent text in the computer and other devices. It generally has 128 standard ASCII codes including every upper case, lowercase alphabets, digits starting from 0-9 and symbols, etc., and assign each character a unique code.

Below is a demonstration of the same −

Suppose we enter the following input −

Value = A 

Following is the desired output −

ASCII value is 65

We can find ASCII value using the following methods −

ASCII value using utf8 property

We can find the ASCII value using utf8 property. This property converts the given string into its UTF-8 code. Or we can say that utf8 property encodes the string’s Unicode scalar values into 8-bit integer value.

Syntax

Following is the syntax of utf8 property −

mystring.utf8

Algorithm

The algorithm is explained below −

• Step 1 − Declare a variable with value - val = abc

• Step 2 − Run a for loop with val.utf8.

• Step 3 − Print the output

Example

The following program shows how to print the ASCII values using utf8 property.

import Foundation
import Glibc

var val = "abc"

print("ASCII values are:")
for k in val.utf8{
   print(k)
}

Output

ASCII values are:
97
98
99

Here, in the above code, we have a string of characters that is val = “abc”. Now use val.utf8 property in for loop to find the ASCII value of each character like the ASCII value of a = 97, b = 98, c = 99.

ASCII value using value property

We can also find the ASCII value of the given character with the help of value property of UnicodeScalar() function. The value property is used to find the numeric value of the given Unicode Scalar.

Syntax

Following is the syntax of value property −

UnicodeScalar(“a”).value

Algorithm

The algorithm is explained below −

• Step 1 − Declare a variable with unicode value- val1 = UnicodeScalar("a").value

• Step 2 − Print the output

Example

The following program shows how to print the ASCII values using value property.

import Foundation
import Glibc

let val1 = UnicodeScalar("a").value
print("ASCII value of a is ", val1)

let val2 = UnicodeScalar("X").value
print("ASCII value of X is ", val2)

Output

ASCII value of a is  97
ASCII value of X is  88

Here in the above code, we are finding the ASCII value of a and X using UnicodeScalar().value property that is 97 and 88.