#include <stdio.h>
int main() {
char c;
printf(“Enter a character: “);
scanf(“%c”, &c);
// %d displays the integer value of a character
// %c displays the actual character
printf(“ASCII value of %c = %d”, c, c);
return 0;
}
Output-
Enter a character: C
ASCII value of C = 67
let’s break down the C program step by step:
- #include <stdio.h>: This line includes the standard input-output library, which provides functions like printf and scanf for input and output operations.
- int main(): This line marks the beginning of the main function, which is the entry point of a C program. It returns an integer (int) value to the operating system when the program finishes running. In this case, it takes no arguments, indicated by the empty parentheses ().
- {: The curly brace marks the beginning of the main function’s body, where the actual code of the program resides.
- char character;: Here, you declare a character variable named character to store the user’s input character.
- printf(“Please enter a character: “);: This line uses the printf function to display the message “Please enter a character: ” on the console, prompting the user to input a character.
- scanf(“%c”, &character);: This line uses the scanf function to read input from the user. It expects a character input (%c) and stores it in the character variable. The & operator is used to provide the memory address of the character variable so that scanf can store the input character there.
- printf(“ASCII value of ‘%c’ = %d\n”, character, character);: Here, you use printf to display the result. It prints the entered character (enclosed in single quotes for clarity), followed by its ASCII value as an integer.
- return 0;: This line indicates the end of the main function and returns an exit status of 0 to the operating system, typically indicating successful program execution.
When you run this program:
It prompts you to enter a character.
You input a character (e.g., “C”) and press Enter.
The program calculates and displays the ASCII value of the entered character. For “C,” it displays “ASCII value of ‘C’ = 67.”
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