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#include <stdio.h>
#include <string.h> // for string build in function, strlen

int main()
{
    const int firstNumber = 30;
    const int secondNumber = 50;
    const int day = 2;
    const int myNumbers[] = {4, 6, 9, 20, 5, 10};
    const char *myLanguages[] = {"C", "C++", "Java", "C#", "PHP", "Python", "Ruby", "JavaScript", "Rust", "Go", "Swift", "R", "Kotlin"};

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#include <stdio.h>
#include <string.h>

int main(void) {
    const char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    char firstText[50] = "Hello ";
    const char secondText[] = "World!";
    const int alphabetLength = strlen(alphabet);
    const int alphabetByte = sizeof(alphabet);
    const char firstStr[] = "Happy";

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#include <stdio.h>
#include <stdbool.h>

/*
 * Run:
 * gcc -Wall -pedantic -Werror -Wextra -std=c99 c-programming/input.c -o c-programming/output
 * gcc c-programming/input.c -o c-programming/output
 * c-programming/output
 */

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#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}

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# Python as calculator
x, y = 9, 3

print(x + y)  # Addition
# 12

print(x - y)  # Subtraction
# 6

print(x * y)  # Multiplication

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# Complex function conversion
# A different data type can be converted to a complex number
 
# Conversion of integer numbers  to a complex number
# You can provide an argument to a complex() function
z = complex(10, 20)
print(z)
# (10+20j)
complex('10', '20')
# Traceback (most recent call last):

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z = 2 + 17.6j
print(z)
# (2 + 17.6j)
print(z.real)
# 2.0
print(z.imag)
# 17.6
print(z.conjugate())
# (2-17.6j)

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# Number - Integer, Float, Complex
# Integer
Integer in Python are numbers without decimal e.g 20
# A different data type can be converted to an integer
# Integer conversion is done with the int() function
book_price = 20
print(book_price)
# 20
book_price = '30'
print(int(book_price))

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# Primitive Data Structures (Types)
# All Primitive Data Types are Immutable Objects 
int_ = 5                  # int - Immutable Object 
float_ = 5.25             # float - Immutable Object 
complex_ = 2 + 7.25j      # complex - Immutable Object 
str_ = 'This is a text'   # str - Immutable Object 
bool_ = False             # bool - Immutable Object 

type(int_)                # int - Integer Numbers
# <class 'int'>

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isinstance('Hello', (float, int, str, list, dict, tuple))
# True