Week1.md

core-code-from-Elvin-Rueda

Tuesday

1. Interpreted And Compiled Programming Languages

Compiled languages:

(C++, Go) are converted directly into machine native code by a compiler program.

Interpreted Languages**:

In interpreted languages (Python, JavaScript), there are no build steps. Instead, interpreters operate on the source code of the program while executing it.

2.- Is Java compiled or interpreted, or both?

Java can be considered both a compiled and an interpreted language because its source code is first compiled into a binary byte-code. This byte-code runs on the Java Virtual Machine (JVM), which is usually a software-based interpreter. The use of compiled byte-code allows the interpreter (the virtual machine) to be small and efficient (and nearly as fast as the CPU running native, compiled code).

3.- Pseudocode Currency Converter exercise (a program to determine if a number is greater than 50)

1. Start
2. A < -- 10
3. Z < -- A > 50
4. PRINT Z
5. END

4. Learn about High and Low level languages

A high-level language (HLL) is a programming language such as C, FORTRAN, or Pascal that enables a programmer to write programs that are more or less independent of a particular type of computer. Such languages are considered high-level because they are closer to human languages and further from machine languages.

In contrast, assembly languages are considered low-level because they are very close to machine languages.



Examples of used high-level languages:


Python.
Java.
C++
C#
Visual Basic.
JavaScript.

Wednesday

1. Year or Birth

_1983= 11110111111

2ˆ10	2ˆ9	2ˆ8	2ˆ8	2ˆ6	2ˆ5	2ˆ4	2ˆ3	2ˆ2	2ˆ1	2ˆ0
1024	512	256	128	64	32	16	8	4	2	1
1	1	1	1	0	1	1	1	1	1	1

2. MIPS

Create a program to add two numbers given by the user:

.data
    n1: .asciiz "enter your first number: "
    n2: .asciiz "enter your second number: "
    result: .asciiz "result is "

.text
    #getting first input.
    la $a0, n1
    li $v0, 4
    syscall
    li $v0, 5
    syscall
    move $t0, $v0

    #getting second input.
    la $a0, n2
    li $v0, 4
    syscall
    li $v0, 5
    syscall
    move $t1, $v0

    #calculate and print out the result.
    la $a0, result
    li $v0, 4
    syscall
    add $t3, $t0, $t1
    move $a0, $t3
    li $v0, 1
    syscall

    #end program.
    li $v0, 10
    syscall
    

Thursday

1. Print special numbers

Using For:

for (let i = 0; i < 9; i++) {
   console.log(i);
   // more statements
}

2. Bad code

var cond = false; 
if (cond == true) 
{ console.log('The cond variable is true'); } 
else { console.log('The cond variable is false'); } 

The code was using an assignment instead of a comparision expression.

2. Bad code 2

var n = 100;

if (n == 100) {
  console.log('This is a special number!');
} else if (n < 1000 && n % 10 == 0) {
  console.log('This number is almost special');
} else {
  console.log('Just a regular number');
}