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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!

<p>User Input in C</p> <p>Using printf() for output values in C is quite common. But for capturing user inputs, you can utilize the scanf() function:</p> <p>Example</p> <pre> &lt;code&gt; // Set up an integer variable to store a number from the user int userInputNum; // Request for a number from the user printf("Please enter a number: \n"); // Capture and save the user's input scanf("%d", &amp;userInputNum); // Display the number inputted by the user printf("Your number is: %d", userInputNum); &lt;/code&gt; </pre> <p>The scanf() function requires two things: a format specifier for the variable (%d in this case) and the memory address of the variable (&amp;userInputNum).</p> <h3>Inputting Multiple Values</h3> <p>You could also use the scanf() function to admit more than one input:</p> <p>Example</p> <pre> &lt;code&gt; // Set up an integer and a char variable int userInputNum; char userInputChar; // Request for a number and a character from the user printf("Enter a number AND a character: \n"); // Capture and save the number AND character inputted by the user scanf("%d %c", &amp;userInputNum, &amp;userInputChar); // Display the number inputted by the user printf("Your number is: %d\n", userInputNum); // Display the character inputted by the user printf("Your char is: %c\n", userInputChar); &lt;/code&gt; </pre> <h3>Capturing String Inputs</h3> <p>In addition, capturing a user's string input is also possible:</p> <p>Example</p> <pre> &lt;code&gt; // Set up a string variable char firstUserInputName[30]; // Request for some text from the user printf("What is your first name: \n"); // Capture and save the text from the user scanf("%s", firstUserInputName); // Display the text inputted by the user printf("Hello %s", firstUserInputName); &lt;/code&gt; </pre> <p>Note: There are some restrictions when dealing with scanf() and strings - spaces are considered as terminating characters resulting in solely one word being displayed. To read a line of text or multiple words, use the fgets() function:</p> <p>Example</p> <pre> &lt;code&gt; char fullName[30]; printf("Enter your full name: \n"); fgets(fullName, sizeof(fullName), stdin); printf("Hello %s", fullName); &lt;/code&gt; </pre> <p>Use the scanf() function for a single word as input, whereas use fgets() for multiple words.</p>