How to Instruct a Computer
Let's write some code to instruct the computer to perform simple calculations and output the result :)
const x = 1;
const y = 2;
const z = 3;
console.log((x + z) * y);
const is the keyword used to define a constant value that does not change throughout the program's execution.
const x = 1 means assigning the value 1 to the constant x.
Here, a keyword is a word with special meaning that JavaScript has already pre-defined and cannot be used by the programmer for naming variables or functions. The = operator is used to assign a value to a constant.
The meaning of =
In programming, the = operator is used to assign a value rather than indicating equality as it does in mathematics.
Similarly, we assign 2 to the constant y and 3 to the constant z.
The meaning of the Multiplication Operator *
In (x + z) * y, the asterisk (*) signifies multiplication. By the way, division in programming languages is represented by the slash (/).
So, you add x and z which results in (x + z) and then multiply the result by y. The computed value, i.e., 4 * 2 = 8, is passed to console.log.
Outputting
console.log is a function that prints the value passed within its parentheses (()). Without console.log, the result of (x + z) * y would not be displayed on the screen.
Pretty simple, right?
This way, we have instructed the computer to perform simple calculations and output tasks using JavaScript!
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