Programming Techniques DT143G Lecture 1

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the correct file suffix for a C language program file?

.c (correct)

.txt

.cpp

.java

Which step follows the writing and saving of a C program?

Executing the program

Compiling the file (correct)

Linking the program

Debugging the code

Which of the following compilers automatically handles both compilation and linking in one command?

javac

gcc (correct)

gpp

If the compilation of a C program is successful, what will it create?

Object file Signup and view all the answers

What is the purpose of a linker in C programming?

To link the program with other necessary files Signup and view all the answers

Which of the following correctly represents how to declare multiple integer variables in C?

int a, b, c; Signup and view all the answers

What is the purpose of the semicolon in a C program?

It signifies the end of a statement. Signup and view all the answers

What does the %d format specifier do in a printf statement?

Writes a decimal integer. Signup and view all the answers

In C programming, which statement is true regarding variable usage?

Each variable must have a type specified before use. Signup and view all the answers

Which of the following statements accurately describes the main function in a C program?

All programs must contain a function named 'main'. Signup and view all the answers

What is the purpose of including stdio.h in a C program?

It allows the use of input/output functions. Signup and view all the answers

In C programming, how are code statements grouped together?

By using curly braces. Signup and view all the answers

What is the purpose of a compiler in programming?

To translate a program into machine code. Signup and view all the answers

What is the primary characteristic of high-level programming languages?

They are closer to human language. Signup and view all the answers

Which statement about files in a computer is true?

Files can be organized into folders. Signup and view all the answers

How is data interpreted from a byte like 01000110?

It can be interpreted based on context. Signup and view all the answers

What is the role of a linker in program development?

To connect new programs with existing ones. Signup and view all the answers

In what form is a program executed by a computer?

In machine code (binary format). Signup and view all the answers

What does a bit represent in a computer system?

A binary state, either 0 or 1. Signup and view all the answers

Which of the following describes a program's structure?

A program is a sequence of instructions executed one by one. Signup and view all the answers

Study Notes

Course Introduction

Course title: Programmeringsteknik DT143G
Lecture 1: Introduction
Course responsible: Pascal Rebreyend
Date: 4-11-2024
Location: Örebro University
Lectures: 15 lectures (2 * 45 minutes)
Labs: 6 lab sessions, 2 students per group
Lab software: Labs will be available on Blackboard soon.
Course materials: BB Learn
Course instructor office: T2232
Course instructor email: [email protected]
Number of assistants: 2

Course Contents

Practical information
Organization of the course
First contact with programming
The spirit of the subject
Goals of the course

Course Materials

Main textbook: C från Början by Jan Skansholm
References:
- Programmeringsmetodik C by Gunnar Joki
- The C programming Language by Brian W. Kernighan and Dennis M Ritchie
Other online materials available

Lectures and Labs

Deadlines

Criteria to Pass the Course

Approved written exam (some questions)
50% of points: grade 3, 70-75% grade 4, 85-90% grade 5
Approved labs: Labs 3, 4, 5, and 6

Computers and Programs

Computer components and functions are illustrated
Calculations are done
System diagram: Input/Output, CPU (Control Unit + Arithmetic Logic Unit (ALU)), Primary Memory (RAM, ROM), Secondary Memory (Hard Disk)

Primary Memory

RAM (Random Access Memory): Stores data while the computer is running. Data is lost when the computer is switched off.
ROM (Read-Only Memory): Holds instructions/data programmed by the manufacturer. Cannot be altered by the user.

Computers and Input-Output

Input Entity: Used to enter data (e.g., keyboard, mouse, sensors)
Output Entity: Used to display or output results (e.g., screen)

Secondary Memory

Stores data when the computer is off.
Higher capacity than primary memory.
Slower than primary memory.

Computers and Data

Data is stored in bits (0 or 1).
8 bits = 1 byte
Conversions: Binary to decimal, decimal to hexadecimal
ASCII codes represent characters.

Files

Data on the hard drive is in the form of files.
Each file is a sequence of bytes.
Files are identified by a name (e.g. myfile.exe, anotherfile.docx).
Folders (directories) are used to organize files.
Folders contain files and other folders

Program

Instructions that tell the computer what to do.
Loaded into memory and executed one by one.
Each instruction has a set of bytes representing it.

Programming Language

Computers understand machine code (0s and 1s).
Assembly language: one instruction per line.
High-level languages (e.g., C, C++, Java): Closer to human language, contain rules/syntax, and use concepts similar to each other .

Developing a Program (Basic Way, C)

Write the program in a text editor.
Save it with the .c extension.
Compile the program to generate an object file (helloworld.o / helloworld.obj).
Link the object file with other programs to create the executable file (a.out (Linux) / helloworld.exe (Windows)).
Run the executable program.
Some languages are interpreted (translation line by line) vs compiled (into machine code).

C Language

Developed by Dennis Ritchie in 1972.
High-level language, closely related to hardware.
Used to develop operating systems and embedded systems.
Powerful but demands careful programming.
Widely used language

Example: Hello World

Code example* of a program that displays "Hello World" on the screen

Programming in C

gcc (GNU Compiler Collection): Common compiler for C on Unix/Linux systems.
Usage: Compilation and linking are often combined into one command.
IDEs (Integrated Development Environments) exist but are not necessary to learn the language.

Explanations

stdio.h file: Contains definitions for standard input/output functions.
Predefined functions such as printf are already defined.

C Programming

Character to jump to next line: (e.g., \n).
Curly brackets: Group code statements into blocks (e.g., { code }).
Semicolons: End each C code statement (e.g., a=5;).
Whitespace (e.g., spaces, tabs): Ignored by the compiler.

Variables

Programming involves computations on variables.
Variables: Allocated spaces in memory to store values
Variables must be declared with types (e.g., int, double, float, char).

Variables in C

Variables must be declared before use.
Data types ( int, double, etc. ) must be specified when declaring variables

A Simple Example

Example code showing how to declare and use an integer variable ('x').

Conclusion

C is an important programming language.
Practice is necessary to become a proficient programmer.
Learn the program syntax.
Using software (gcc, emacs, Geany, Atom) for development
Programming is a skillset applicable across fields

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers the introduction to the Programming Techniques course DT143G, presented by Pascal Rebreyend. It includes details about the course structure, materials, and initial goals of programming. It is designed for students to familiarize themselves with the course landscape and expectations.