ASCII Table – Print ASCII Codes, Characters and Symbols by a Computer Program

#include <stdio.h>

void printBinary(int num, char *binStr) {
    for (int i = 7; i >= 0; i--) {
        binStr[7 - i] = (num & (1 << i)) ? '1' : '0';
    }
    binStr[8] = '\0'; // Null-terminate the string
}

int main() {
    printf("Decimal Number\tOCT Number\tHEX Number\tBIN Number\tSymbol\n");

    for (int i = 0; i < 128; i++) {
        char bin[9]; // Array to hold the binary string (8 bits + null terminator)
        printBinary(i, bin);

        // Replace non-printable characters with a blank space
        char symbol = (i >= 32 && i <= 126) ? i : ' ';

        printf("%d\t\t%03o\t\t%02X\t\t%s\t\t%c\n", i, i, i, bin, symbol);
    }

    return 0;
}

#include <iostream>
#include <iomanip>
#include <bitset>
using namespace std;

int main() {
    // Print the header
    cout << "Decimal Number\tOCT Number\tHEX Number\tBIN Number\tSymbol" << endl;

    for (int i = 0; i < 128; i++) {
        // Binary representation using std::bitset
        string binary = bitset<8>(i).to_string();

        // Replace non-printable characters with a space
        char symbol = (i >= 32 && i <= 126) ? static_cast<char>(i) : ' ';

        // Print the row
        cout << setw(15) << i                // Decimal number
             << setw(10) << oct << i         // Octal number
             << setw(10) << hex << uppercase << i  // Hexadecimal number
             << setw(15) << binary           // Binary number
             << setw(10) << symbol           // Symbol
             << endl;

        // Reset output stream formatting
        cout << dec; // Ensure decimal formatting is restored
    }

    return 0;
}

# Function to generate an 8-bit binary representation
def to_binary(num):
    return format(num, '08b')

# Print the header
print(f"{'Decimal Number':<15}{'OCT Number':<12}{'HEX Number':<12}{'BIN Number':<12}{'Symbol':<10}")

# Iterate through all 128 ASCII characters
for i in range(128):
    decimal = i  # Decimal representation
    octal = format(i, '03o')  # Octal representation
    hexadecimal = format(i, '02X')  # Hexadecimal representation in uppercase
    binary = to_binary(i)  # Binary representation
    symbol = chr(i) if 32 <= i <= 126 else ' '  # Display symbol or blank for non-printable characters
    
    # Print the row
    print(f"{decimal:<15}{octal:<12}{hexadecimal:<12}{binary:<12}{symbol:<10}")

using System;

class AsciiTable
{
    // Method to convert an integer to 8-bit binary string
    public static string ToBinary(int num)
    {
        return Convert.ToString(num, 2).PadLeft(8, '0');
    }

    public static void Main()
    {
        // Print the header
        Console.WriteLine("{0,-15}{1,-12}{2,-12}{3,-12}{4,-10}", 
                          "Decimal Number", "OCT Number", "HEX Number", "BIN Number", "Symbol");

        // Iterate through all 128 ASCII characters
        for (int i = 0; i < 128; i++)
        {
            int decimalValue = i;  // Decimal representation
            string octal = Convert.ToString(i, 8);  // Octal representation
            string hexadecimal = Convert.ToString(i, 16).ToUpper();  // Hexadecimal representation in uppercase
            string binary = ToBinary(i);  // Binary representation
            // Display symbol or blank for non-printable characters
            string symbol = (i >= 32 && i <= 126) ? ((char)i).ToString() : " ";  

            // Print the row with proper formatting
            Console.WriteLine("{0,-15}{1,-12}{2,-12}{3,-12}{4,-10}", 
                              decimalValue, octal, hexadecimal, binary, symbol);
        }
    }
}