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Begin Your Journey with C

To initiate your learning in C, you require the following:

  • A text editor for crafting C code
  • A compiler like GCC to convert the C code into a machine-understandable language

There are various text editors and compilers to select from. For this tutorial, an IDE (Integrated Development Environment) will be used by us.

Setting up the C IDE

An IDE is a software suite that consolidates the basic tools needed to write and test the code. Popular IDEs include Code::Blocks, Eclipse, and Visual Studio which are all free to use and facilitate both the editing and debugging of C code.

Note: Although web-based IDEs can be used, they typically have more limitations compared to their desktop counterparts.

We recommend starting with Code::Blocks. The latest version can be downloaded from here.

Let's Start with C

Create your first C file by following the steps below:

  1. Open Codeblocks
  2. Go to File > New > Empty File
  3. Write the following C code and save the file as myfirstprogram.c:
#include <stdio.h>, int main() { printf("Welcome to Fynd Academy!"); return 0;}

The above code might seem incomprehensible for now, we'll break it down in later chapters. For now, concentrate on running the code.

Executing Your Code

After writing the code, it's time to run it. In Codeblocks, navigate to Build > Build and Run. Your result will look something like this:

Welcome to Fynd Academy!

Great job! You've just written and executed your first C program.

Your C Learning Journey with Fynd Academy

Learning C with Fynd Academy is facilitated by our "Practice it Yourself" tool. It concurrently illustrates the code and the outcome, simplifying every new part you learn:

#include <stdio.h>int main() { printf("Welcome to Fynd Academy!"); return 0;} Welcome to Fynd Academy!

Practice it Yourself ยป

Fynd Academy Pathfinder

Track your progress as you embark on your learning journey. Best of all, it's complimentary!

Here's the text reformatted based on your instructions: <uic_r_f();></uic_r_f();> <h2>C Constants</h2> <h3>Constants</h3> <p>If there is a need to prevent modifications to existing variable values, the <code>const</code> keyword can be used. Declaring a variable with <code>const</code> makes it "constant", signifying its unchangeable and read-only nature.</p> <h4>Example</h4> <code> const int myNum = 15; // myNum will always be 15<br/> const int myNum = 10; // error: assignment of read-only variable 'myNum' </code> <h3>Usage of Constants</h3> <p>Variables holding values that are unlikely to change should always be declared as constants.</p> <h4>Example</h4> <code> const int minutesPerHour = 60;<br/> const float PI = 3.14; </code> <h4>Notes on Constants</h4> <p>A constant variable must be assigned a value at the moment of declaration:</p> <h4>Example:</h4> <code> const int minutesPerHour = 60; </code> <p>However, the following won't work:</p> <code> const int minutesPerHour;<br/> minutesPerHour = 60; // error </code> <h3>Good Practice</h3> <p>Regarding constant variables, it is often considered beneficial for code readability to declare them in uppercase. While not mandatory, it is a common practice among Fynd Academy programmers:</p> <h4>Example</h4> <code> const int BIRTHYEAR = 1980; </code> <h3>C Exercises</h3> <h4>Exercise:</h4> <p>Ensure that the value of the following variable cannot be altered:</p> <code> int hoursPerDay = 24; </code> <p>Submit Answer &raquo;</p> <p>Start the Exercise</p> <h2>Pathfinder</h2> <p>Track your progress - it's free!</p>