Level 3 exam — WinDev · GUIDINEE.COM

Exam — fresh questions

12 questions to validate level 3 with Yacine, a WinDev developer at an SME trading electrical equipment in Oran: procedures and collections, advanced types, OOP, error handling and reuse.
Answer everything, then click Check: your score and explanations will appear.

3 · Recall

1. Which procedure is accessible from all the windows of the project?

the global procedure declared at project level the local procedure declared in a single window the anonymous procedure created in an event the temporary procedure limited to a single button

The global procedure is declared at project level: it is visible from all screens, unlike the local procedure.

3 · Application

2. Yacine uses the same loyalty discount in three screens. Where should he put it?

in each window, copying the calculation identically in a collection of global procedures, with an explicit name in a global variable modified by each screen in the click event of the button of the first window

A rule used in three screens becomes a global procedure filed in a collection: a single correction suffices.

3 · Arbitration

3. A procedure modifies the original variable without Yacine seeing it. Which lead?

a pass by value whereas a copy was expected a local variable too short to store the value a pass by reference whereas a pass by value was expected a procedure name that does not describe the processing

Passing by reference transmits the variable itself: the procedure modifies the original. Passing by value would have worked on a copy.

3 · Recall

4. Which type lets you retrieve a customer directly by their code?

a dynamic array sorted in alphabetical order a structure containing street, postal code and city a string split on the semicolon an associative array whose key is the customer code

The associative array files the value under a key: access by customer code is direct, without traversing the collection.

3 · Application

5. Yacine imports a CSV of 20,000 items. What is the reflex before converting?

check each value then convert with the expected format convert all the columns directly without checking delete the lines whose format seems unusual treat the file as an array of numbers already clean

An import contains text and variable formats: you must check the values, the decimal separator and the date format before converting.

3 · Arbitration

6. For a simple street, postal code and city block, what should you choose?

a class with encapsulation and inheritance a structure grouping the three pieces of information an external component versioned for the project an associative array of strings without checking

A structure groups related data without behaviour: it is the simplest choice for an address. A class is justified if there are rules.

3 · Recall

7. Which principle prevents modifying a customer's balance directly?

polymorphism between several customer classes inheritance from a generic customer class encapsulation with private members and methods splitting the code into procedure collections

Encapsulation protects sensitive members: the balance changes only through a controlled method such as EnregistreFacture.

3 · Application

8. Which element initialises an object at the moment of its creation?

the method calculating the remaining balance the window template associated with the class the commercial procedure collection the constructor defined in the class

The constructor is called automatically at the creation of the object to initialise its members.

3 · Arbitration

9. Should Yacine's whole application be converted to OOP?

no, OOP remains a pragmatic choice according to complexity yes, WLangage imposes classes for all management yes, without a class no window can be created no, WLangage does not allow defining classes

OOP is useful for rich rules and variants, but a management application develops very well in structured procedural style.

3 · Recall

10. What does QUAND EXCEPTION around an HFSQL write allow?

to prevent the compilation of the code located in the block to intercept the error and display an understandable message to automatically relaunch the query without limit to log only syntax errors

QUAND EXCEPTION intercepts a runtime error: you can log the detail and display a clear message, instead of letting the application crash.

3 · Application

11. An intermittent bug appears at a customer's site. What is the first step?

changing the code at random until the symptom disappears reinstalling WinDev on the user's workstation reproducing the problem reliably with the same data waiting for the user to get used to the malfunction

An irreproducible bug cannot be fixed with certainty: start by identifying the exact conditions and reproducing the case.

3 · Arbitration

12. The user management module will serve three applications of the group. What should you do?

copy it into each project with local corrections leave it in a procedure collection of the first project move it into a shared window template create a versioned component with a stable interface

A coherent module shared between several projects becomes a component: centralised correction, stable interface and controlled versions.

What's next?

Score ≥ 80%: move on to Level 4 — security, advanced UX, deployment and quality with Yacine.
Score between 50% and 80%: review the section(s) you failed (3.1 procedures and collections, 3.2 advanced types, 3.3 OOP, 3.4 errors and debugging, 3.5 reuse), reread the course, then retake the test.
Score < 50%: reread the whole of level 3 while applying each 48h challenge (factorisation, CSV import, class Client, QUAND EXCEPTION, window template) before trying again.
And afterwards? Keep Yacine's reflexes — factor, choose the right type, encapsulate, reproduce bugs and reuse without breaking: level 4 connects them to security, UX and deployment.