Find the ASCII value of a character in C++

Understanding ASCII Values

ASCII (American Standard Code for Information Interchange) assigns numerical values to characters. For example, 'A' has an ASCII value of 65.

We will explore three different methods to find the ASCII value of a character in C++.

Method 1: Using Direct Conversion

This method prints the ASCII value of a character using type casting.

#include <iostream>
using namespace std;

int main() {
    char ch;
    cout << "Enter a character: ";
    cin >> ch;
    cout << "ASCII value of " << ch << " is " << int(ch);
    return 0;
}
            

Method 2: Using a Function

This method uses a function to return the ASCII value of a character.

#include <iostream>
using namespace std;

int getASCII(char ch) {
    return int(ch);
}

int main() {
    char ch;
    cout << "Enter a character: ";
    cin >> ch;
    cout << "ASCII value of " << ch << " is " << getASCII(ch);
    return 0;
}
            

Method 3: Using Pointers

This method finds the ASCII value using a pointer to the character.

#include <iostream>
using namespace std;

int main() {
    char ch;
    cout << "Enter a character: ";
    cin >> ch;
    char *ptr = &ch;
    cout << "ASCII value of " << *ptr << " is " << int(*ptr);
    return 0;
}