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Matrices in PSeInt: two-dimensional arrays

3 examples

How it works

A matrix is a two-dimensional array: a table with rows and columns. You create it with Dimension ventas[3, 5] (3 rows, 5 columns) and name each cell with two indexes, ventas[row, column].

To walk it you use two Para loops, one inside the other: the outer one moves through the rows and the inner one through that row's columns. That's how you fill it, print it as a table or add it up by row and by column.

Matrices are used for game boards, several students' grades in several subjects, or sales per day and per branch.

Short example

The least you need to see it work. Copy it or open it in the editor.

matrices-2d-arrays.psc · 11 lines
Algoritmo SumTable    Definir f, c Como Entero    Dimension tabla[3, 4]    Para f <- 1 Hasta 3 Hacer        Para c <- 1 Hasta 4 Hacer            tabla[f, c] <- f + c            Escribir Sin Saltar tabla[f, c], " "        FinPara        Escribir ""    FinParaFinAlgoritmo

What it prints:

2 3 4 5 3 4 5 6 4 5 6 7
Open it in Codoritmo

Opens in the browser editor, nothing to install.

Solved exercises

Each exercise comes with the full code, its flowchart and a sample run.

  • Weekly Sales

    A table of sales by branch and day, with totals.

    Advanced

  • Tic-Tac-Toe

    The classic three-in-a-row game for two players.

    Advanced

  • Class Grade Book

    Records three grades per student and builds a class report.

    Advanced

In the language reference

The instructions involved, explained one by one.

Other concepts

Codoritmo is an independent, open-source project inspired by PSeInt and compatible with its syntax. It is not affiliated with the PSeInt project. Official PSeInt website.