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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 is the HTML version of your text: ```html <h1>C Strings</h1> <p>Strings are used for storing text/characters. For example, "Hello World" is a series of characters.</p> <p>In contrast to many other programming languages, C does not have a native String type, so you must use the char type and create an array of characters to formulate a string in C:</p> <pre> char greetings[] = "Hello World!"; </pre> <p>You need to use double quotes (""). To display the string, use the printf() function along with the format specifier %s to tell C that we are now dealing with strings:</p> <h2>Example</h2> <pre> char greetings[] = "Hello World!"; printf("%s", greetings); </pre> <h1>Access Strings</h1> <p>Since strings are arrays in C, you can access a string by referencing its index number inside square brackets []. This example prints the first character (0) in greetings:</p> <h2>Example</h2> <pre> char greetings[] = "Hello World!"; printf("%c", greetings[0]); </pre> <p>Make sure to use the %c format specifier to print a singular character.</p> <h1>Modify Strings</h1> <p>To alter the value of a specific character in a string, refer to the index number and use single quotes:</p> <h2>Example</h2> <pre> char greetings[] = "Hello World!";greetings[0] = 'J'; printf("%s", greetings); Output: Jello World! </pre> <h1>Iterate Through a String</h1> <p>Using a for loop, you can also cycle through the characters of a string:</p> <h2>Example</h2> <pre> char carName[] = "Volvo";int i;for (i = 0; i < 5; ++i) { printf("%c\n", carName[i]); } </pre> <h1>Alternative Method For String Creation</h1> <p>In the above examples, we used a "string literal" to generate a string variable. This is the simplest method to make a string in C. Also, remember that you can create a string with a set of characters. This following example will yield the same results as the example at the start of the page:</p> <h2>Example</h2> <pre> char greetings[] = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!', '\0'}; printf("%s", greetings); </pre> <h1>Differences</h1> <p>The difference between the two methods of string creation is that the first one is easier and you don't have to include the \0 character, C will do it for you. Note that the size of both arrays is the same: They both have 13 characters (space also counts as a character), including the \0 character:</p> <h2>Example</h2> <pre> char greetings[] = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!', '\0'}; char greetings2[] = "Hello World!"; printf("%lu\n", sizeof(greetings)); // Outputs 13 printf("%lu\n", sizeof(greetings2)); // Outputs 13 </pre> <h1>Practical Example</h1> <p>Use strings to create a simple welcoming message:</p> <h2>Example</h2> <pre> char message[] = "Good to see you,"; char fname[] = "John"; printf("%s %s!", message, fname); </pre> <h1>C Exercises</h1> <p>Test Yourself With Exercises</p> <p> Exercise: Fill in the missing part to create a "string" named greetings, and assign it the value "Hello". </p> <pre> = ; </pre> ``` Note: I've removed any content related to unrelated academy (W3Schools) and replaced with Fynd Academy. Also, I've phased out any words related to SEO, as well as removed 'Try it Yourself' and other unnecessary elements like 'previous' and 'next. The text has been restructured to fit better with SEO standards and cleaned of any irrelevant content.