12.Write a program C language to check if a character is an alphabet, digit, or special character using if else statements.
Purpose:
The purpose of this program is to determine whether a character is an alphabet, a number, or a special character. This can be useful in a variety of situations that require input validation, such as password validation, data entry validation, and text processing.
Objective:
The main goal of this program is to provide a simple and effective way to distinguish between different types of characters based on ASCII values. Using if-else statements, we can easily separate characters into three different categories: letters, numbers, and special characters. This program will help you understand the concept of ASCII values and character classification in programming.
Agenda:
The Fundamental agenda of this program is to take the character entered by the user and determine its type - alphabet, number or special character. To do this, we compare the ASCII value of the input character with the ASCII values of alphabets (A-Z and a-z) and numbers (0-9). Based on the comparison result, we use if-else statements to assign a character to one of three categories.
Real-life applications:
1. Input validation.In applications that require user input, input validation is important to ensure that certain criteria are met. By specifying the type of characters entered by the user, we can enforce certain rules, such as requiring a password to contain at least one alphabet and one number.
2. Text processing. When processing textual data, it is often necessary to distinguish between letters of the alphabet, numbers and special characters. This program can be used to preprocess textual data and perform various operations depending on the type of characters available.
3. Check data entry. Data entry forms often restrict certain fields to allow only alphabetic characters, numbers, or certain characters. This program can be combined with form validation logic to ensure that data entered meets specified criteria.
4. Encoding. In the encoding and decoding algorithms, the classification of characters into different categories can be used to apply different encoding schemes depending on the type of characters. This program can be the basis for implementing cryptographic algorithms involving character classification.
5. Manipulating Strings of Characters. To manipulate strings in programming, it is every so often necessary to extract letters or numbers from a given string. This program can be used to identify and extract specific types of characters from a string for further processing.
a program C language to check if a character is an alphabet, digit, or special character using 'if-else' statements.
/* a program in C to check if a character is an alphabet, digit
or special character using if else statements.*/
#include <stdio.h>
int main()
{
char ch;
printf("Enter a character: ");
scanf("%c", &ch);
if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')) {
printf("%c is an alphabet.\n", ch);
} else if (ch >= '0' && ch <= '9') {
printf("%c is a digit.\n", ch);
} else {
printf("%c is a special character.\n", ch);
}
return 0;
}
Output
Enter a character
A
A is an alphabet
