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Chapter 6

Are you good at math?​

Can we evaulate some question about 5 (C) + (C)(D)? when C = 1 / 5 and D = 15 , and yes of course.

// compute 5(C)
// 5(C) = 5 x 1 / 5;

// compute (C) (D)
// (C)(D) = 1 / 5 x 15 = 15 / 5

// and then add it
var c: int = 1 / 5;
var d: int = 15;
var answer: int = ((5 * 1) / 5) + ((15 * 1) / 5);

std::print(answer);

you can re assign some variable.

var data: int = 30 * 40;

std::print(data);

data = 30 + 40;

std::print(data);

fun fact: you can using + for combine some string

std::print("jane " + "slowy");

Playing with variable​

Can we print other data types combine with string ?, absolutely no, you must convert data types to string like integer, float

var age: int = 20;

std::print("mamads are: " + string age + " years old");

in xvr you can use string keyword to convert integer or float data type to string for print it with strings

Instead of using string concatenation, you can use format specifiers:

var age: int = 20;
var name: string = "arfy";

std::print("%s is %d years old", name, age);  // arfy is 20 years old

var price: float = 19.99;
std::print("Price: $%f", price);              // Price: $19.99

This is cleaner than string concatenation and avoids explicit type conversion.

Assign with other data types​

you can make some variable names as alias for data types, using astype, with specific are type

// dataList cannot assign a value
// only working with assign as data type
var dataList: type = astype [int];
var my_list_number: dataList = [1, 2, 3, 4];

std::print(my_list_number);
// integersNumber cannot assign a value
// only working with assign as data type
var integersNumber: type = astype int;
var my_number: integersNumber = 20;

std::print("my number are: " + string my_number + " look cool right");