ASCII Value of a Character in C

American Standard Code for Information Interchange (ASCII) is a character encoding standard that assigns a unique numerical value to all characters including special symbols. In C programming, the ASCII value of the character is stored instead of the character itself. For example, the ASCII value of ‘A’ is 65.

• Each character or special character is represented by some ASCII code.
• Each ASCII code occupies 7 bits in memory.
• Each character variable is assigned an ASCII value ranging from 0 to 127.

In this article, we will learn how to find and print the ASCII value of the character in C.

C Program To Print ASCII Value of a Character

We use a format specifier here to give the numeric value of the character. Here %d is used to convert a character to its ASCII value.

C

// C program to print
// ASCII Value of Character
#include <stdio.h>

// Driver code
int main()
{
    char c = 'k';

    // %d displays the integer value of
    // a character
    // %c displays the actual character
    printf("The ASCII value of %c is %d", c, c);
    return 0;
}

Output

The ASCII value of k is 107

Complexity Analysis

• Time complexity: O(1)
• Auxiliary Space: O(1)

Refer to the complete article Program to print ASCII Value of a character for more methods to print the ASCII value of a character.