PROGRAM
INCLUDE('windows.inc')
MAP
INCLUDE('windows.inc')
END
CODE
MESSAGE('Hello, World!', 'Clarion Message', ICON:Information + BUTTON:Ok).webp){kind=logo}
Ask the right questions to secure the right Clarion (programming language) talent among an increasingly shrinking pool of talent.
Clarion is a commercial, proprietary, 4GL (fourth-generation programming language) developed by SoftVelocity. It is used to create database applications and includes an IDE (integrated development environment) with a compiler, debugger, and templates for generating code. Clarion has its own programming language but also supports both procedural and object-oriented programming. Its primary strength lies in its ability to generate Windows-based applications from templates with no coding required. This makes it a suitable choice for developers who need to quickly build complex database applications.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
In Clarion, a GROUP is a collection of variables that can be of different data types, while a RECORD is a collection of fields that are usually of the same data type.
In Clarion, you create a procedure using the PROCEDURE keyword followed by the procedure name. For example, PROCEDURE MyProcedure.
The INCLUDE directive in Clarion is used to include a file in the program. It's similar to the #include directive in C/C++.
In Clarion, you declare a variable by specifying the data type followed by the variable name. For example, LONG MyVariable.
The basic data types in Clarion include BYTE, SHORT, USHORT, LONG, ULONG, REAL, SREAL, DECIMAL, SDECIMAL, DATE, TIME, STRING, PSTRING, GROUP, and RECORD.
The ability to handle pressure and meet deadlines is crucial in a fast-paced work environment. The candidate should be able to manage their time effectively and deliver work on schedule.
Communication skills are important for understanding project requirements, collaborating with team members, and explaining technical concepts to non-technical stakeholders.
Adaptability is key in the ever-evolving field of programming. The candidate should be open to learning and working with new technologies as required.
Problem-solving skills are crucial for any programming role. The candidate should be able to identify, troubleshoot, and resolve issues in Clarion.
Previous experience in working on Clarion projects is a good indicator of the candidate's ability to apply their knowledge in a practical setting.
This is important because the job role requires a deep knowledge of Clarion. The candidate should be able to demonstrate their proficiency in the language.
The next 20 minutes of the interview should attempt to focus more specifically on the development questions used, and the level of depth and skill the engineer possesses.
In Clarion, you can write data to a file using the PUT directive. For example, PUT(File, Record) would write a record to the specified file.
In Clarion, the OPEN directive is used to open a file for input/output, while the USE directive is used to declare a file and its structure.
In Clarion, you can read data from a file using the GET directive. For example, GET(File, Record) would read a record from the specified file.
Clarion supports several looping structures including LOOP...END, WHILE...END, DO...UNTIL, and FOR...END.
In Clarion, you can handle errors using the ERROR directive. You can also use the SYSTEM built-in variable to check for system errors.
A proficient Clarion engineer should display excellent problem-solving skills, deep knowledge of the Clarion language and related database technologies, and strong communication abilities. Red flags include inability to explain complex concepts simply or lack of experience in real-world application development using Clarion.
PROGRAM
INCLUDE('windows.inc')
MAP
INCLUDE('windows.inc')
END
CODE
MESSAGE('Hello, World!', 'Clarion Message', ICON:Information + BUTTON:Ok)MyString STRING(20)
CODE
MyString = 'Hello, Clarion!'
DISPLAY(MyString)MyArray ARRAY[3] OF STRING(10)
CODE
MyArray[1] = 'One'
MyArray[2] = 'Two'
MyArray[3] = 'Three'
DISPLAY(MyArray[1], MyArray[2], MyArray[3])MyThread THREAD('MyProcedure')
CODE
START(MyThread)MyClass CLASS
MyString STRING(20)
MyProcedure PROCEDURE
CODE
MyString = 'Hello, Clarion!'
DISPLAY(MyString)
END
ENDMyString STRING(20)
MyNumber LONG
CODE
MyString = '123'
MyNumber = VAL(MyString)
DISPLAY(MyNumber)The final few interview questions for a Clarion (programming language) candidate should typically focus on a combination of technical skills, personal goals, growth potential, team dynamics, and company culture.
Clarion supports several types of data structures including arrays, records, groups, queues, and lists.
In Clarion, you can create a dynamic array using the DIM directive. For example, DIM MyArray[*] would create a dynamic array.
In Clarion, a procedure is a block of code that performs a specific task and does not return a value, while a function is a block of code that performs a specific task and returns a value.
In Clarion, you can create a multi-dimensional array by specifying the dimensions after the array name. For example, ARRAY[10,20] MyArray.
Clarion supports several types of arrays including one-dimensional arrays, multi-dimensional arrays, and dynamic arrays.
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