PSeInt profile UJGH

These are the rules of the UJGH profile, explained simply, with an example that follows them and opens in Codoritmo with one click.

Open in Codoritmo with this profile

Opens this page's example with the UJGH profile already switched on.

How its author describes it

The profile's original text, in Spanish, as distributed with PSeInt.

Configuración usada en la Universidad Doctor José Gregorio Hernández por los estudiantes de la Facultad de Ingenería Escuela de Computación y Sistemas para la materia Algoritmo, Estructura y Programación dictada por el docente Lucelly Leal.

In short

What changes compared with Codoritmo's default profile:

Every variable needs a value before it is used
The Para counter is protected
Entonces, Hacer and endings such as FinSi must be written in full
You can assign with = as well as <-
Text can't be joined with +
No Para Cada (for each) loop
Repetir only ends with Hasta Que

All of its rules

Marked rules differ from Codoritmo's default profile; everything else behaves the same.

Variables

How they are declared and when they can be used.

Declare variables with Definir: Optional. You can use a variable without declaring it: its type comes from the first value you store in it.
Give a value before useDiffers from default: Required. Reading a variable, or an array slot, that has no value yet stops the program with an error. That's why accumulators start with something like suma <- 0.
Protected Para counterDiffers from default: Inside a Para you can't change the counter, and once the loop ends the counter has no value, so don't use it afterwards.
Accents and ñ in names: Allowed: a variable can be called año or posición.

Writing style

Punctuation, closing words and how values are assigned.

Semicolon at the end: Optional. You can end statements with ; or leave it out.
Relaxed syntaxDiffers from default: Strict: write every structure in full, with Entonces, Hacer and one-word endings such as FinSi and FinMientras.
Assign with =Differs from default: Allowed: besides x <- 5 you can write x = 5. Inside a condition, = is still a comparison.

Operators and conditions

How comparisons are written and text is put together.

Word operators: You can write Y, O, NO and MOD (and, or, not, remainder) as well as their symbols &, |, ~ and %.
Plain-language conditions: Accepts conditions such as x Es Par (is even), x Es Mayor Que 5 (is greater than 5) or x Es Divisible Por 3.
Join text with +Differs from default: Not allowed: to show several values together, separate them with commas in Escribir.

Arrays

Where indexes start and how the size is set.

First array index: Arrays start at 1: after Dimension notas[3] the slots are notas[1], notas[2] and notas[3].
Array size from a variable: Allowed: you can read n and then write Dimension datos[n].
Resize arrays: You can change the size of an existing array with Redimensionar.

Loops and Segun

Which ways of repeating and choosing between cases it accepts.

Para Cada loopDiffers from default: Not available: go through arrays with a Para and an index.
Repetir … Mientras QueDiffers from default: A Repetir loop can only end with Hasta Que condition (until).
Para counting down: If the start is greater than the end, Para counts down one by one even without Con Paso -1.
Segun with whole numbers: The value a Segun checks can also be text, with options such as "a".

Subroutines and text functions

Which extra tools you get to organise the program.

Your own subroutines and functions: You can write your own SubProceso or Funcion to split the program into parts.
Text functions: Available: Longitud, Subcadena, Mayusculas, Minusculas and Concatenar (length, substring, upper case, lower case, join).

An example that follows these rules

It works out the average of three marks. It's written for this profile, and the comments point out what changes compared with the default. We checked it with Codoritmo's interpreter using these same rules.

PerfilUJGH.psc · 32 lines

1// Example written with the rules of the UJGH profile2// Strict syntax: Entonces, Hacer and FinSi always in full3Algoritmo PerfilUJGH4    Dimension notas[3]5    notas[1] <- 86    notas[2] <- 97    notas[3] <- 78    // Every variable needs a value before it is used9    // This profile also lets you assign with =10    suma = 011    // No Para Cada: the array is read with an index12    Para i <- 1 Hasta 3 Hacer13        // Inside the Para you can't change i14        suma <- suma + notas[i]15    FinPara16    promedio <- suma / 317    nombre <- "Ana"18    // + doesn't join text: Escribir separates values with commas19    Escribir "Hi, ", nombre20    Escribir "Average: ", promedio21    Si promedio >= 7 Y promedio <= 10 Entonces22        Escribir "Passed"23    SiNo24        Escribir "Failed"25    FinSi26    Si suma Es Par Entonces27        Escribir "The sum is even: ", suma28    SiNo29        Escribir "The sum is odd: ", suma30    FinSi31    // Repetir can only end with Hasta Que32FinAlgoritmo

What it prints

This is the example's real output, run with the UJGH profile.

Hi, Ana
Average: 8
Passed
The sum is even: 24