C Programs

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C Program: Find ASCII Value of a Character

Introduction

Every character in C (letters, digits, symbols) is internally represented by a unique integer value known as the ASCII (American Standard Code for Information Interchange) value.

For example:

• 'A' → ASCII value is 65
• 'a' → ASCII value is 97
• '0' → ASCII value is 48

In this program, we input a character from the user and print its ASCII value. This demonstrates how characters and integers are related in C, since characters are stored as integers internally.

C Program: Find ASCII Value of a Character

#include <stdio.h>   // Standard I/O header
 
int main() {
    char ch;
 
    // Input from user
    printf("Enter a character: ");
    scanf("%c", &ch);
 
    // Display ASCII value
    printf("The ASCII value of '%c' is %d\n", ch, ch);
 
    return 0; // Successful termination
}

 
OUTPUT 1 :
Enter a character: A
The ASCII value of 'A' is 65

OUTPUT 2 :
Enter a character: #
The ASCII value of '#' is 35

Explanation:

1. char ch;
   • Declares a character variable ch to store user input.
2. scanf("%c", &ch);
   • Reads a character from the user.
3. printf("The ASCII value of '%c' is %d\n", ch, ch);
   • %c → prints the character.
   • %d → prints its ASCII value (since characters are internally stored as integers).
4. return 0;
   • Exits the program successfully.