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| Other Program |
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Any character is entered through the keyboard, write a program to determine whether the character entered is a capital letter, a small case letter, a digit or a special symbol. The following table shows the range of ASCII values for various characters.
ASCII value character classification
Below is a Java program that reads a character input from the keyboard and determines whether it is a capital letter, a small case letter, a digit, or a special symbol based on its ASCII value.
import java.util.Scanner;
public class CharacterType {
public static void main(String[] args) {
// Create a Scanner object for input
Scanner scanner = new Scanner(System.in);
// Prompt the user to enter a character
System.out.print("Enter a character: ");
char ch = scanner.next().charAt(0);
// Get ASCII value of the character
int asciiValue = (int) ch;
// Determine the type of character using ASCII values
if (asciiValue >= 65 && asciiValue <= 90) {
System.out.println(ch + " is a capital letter.");
} else if (asciiValue >= 97 && asciiValue <= 122) {
System.out.println(ch + " is a small case letter.");
} else if (asciiValue >= 48 && asciiValue <= 57) {
System.out.println(ch + " is a digit.");
} else if ((asciiValue >= 0 && asciiValue <= 47) ||
(asciiValue >= 58 && asciiValue <= 64) ||
(asciiValue >= 91 && asciiValue <= 96) ||
(asciiValue >= 123 && asciiValue <= 127)) {
System.out.println(ch + " is a special symbol.");
} else {
System.out.println("Invalid input.");
}
// Close the scanner
scanner.close();
}
}
Explanation:
- Scanner Class: Used to read input from the user.
- charAt(0): Reads the first character of the input string.
- if-else Statements: Determines the type of character based on its ASCII value:
- Capital letters: ASCII values between 65 (‘A’) and 90 (‘Z’).
- Small case letters: ASCII values between 97 (‘a’) and 122 (‘z’).
- Digits: ASCII values between 48 (‘0’) and 57 (‘9’).
- Special symbols: Any other characters.
Sample Output:
Enter a character: A
A is a capital letter.
Enter a character: g
g is a small case letter.
Enter a character: 5
5 is a digit.
Enter a character: @
@ is a special symbol.
This program correctly identifies the type of character based on the ASCII value ranges provided.
