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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 text reworked according to your instructions: C Strings Strings in C Strings are employed for the purpose of storing text. Let's take "Hello World", it is identified as a string of characters. Unlike most programming languages, C does not have an inherent string type to effortlessly establish string variables. So, it is necessary to employ the char type and create an array of characters to create a string in C: Example ``` <p>char greetings[] = "Hello World!";</p> ``` Keep in mind to use double quotes ("") when you declare a string. The printf() function is utilized to output the string along with the format specifier %s. Accessing Strings Since strings are actually arrays in C, they can be accessed by referring to the array index within square brackets []. This example prints the first character in greetings: Example ``` <p>char greetings[] = "Hello World!";</p> <p>printf("%c", greetings[0]);</p> ``` For printing a single character, the %c format specifier is used. Modifying Strings To alter a specific character in a string, refer to the index number, and use single quotes: Example ``` <p>char greetings[] = "Hello World!";</p> <p>greetings[0] = 'J';</p> <p>printf("%s", greetings);// This will output Jello World!</p> ``` Looping Through a String A for loop can be used to loop through the characters of a string: Example ``` <p>char carName[] = "Volvo";</p> <p>int i;</p> <p>for (i = 0; i < 5; ++i) {</p> <p>printf("%c\n", carName[i]);}</p> ``` One can use the sizeof formula to make the loop maintainable, instead of manually writing the size of the array in the loop condition. For instance: Example ``` <p>char carName[] = "Volvo";</p> <p>int length = sizeof(carName) / sizeof(carName[0]);</p> <p>int i;</p> <p>for (i = 0; i < length; ++i) {</p> <p>printf("%c\n", carName[i]);}</p> ``` Note: The sizeof formula does not include the null terminating character, \0. Creating Strings Another Way Strings can also be created with a set of characters. This method will also produce the same result: Example ``` <p>char greetings[] = {'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd', '!', '\0'};</p> <p>printf("%s", greetings);</p> ``` The \0 character, known as the "null terminating character", is included at the end of the string to indicate the end. Real World Example Strings can be used to create a friendly greeting message: Example ``` <p>char message[] = "Good to see you,";</p> <p>char fname[] = "John";</p> <p>printf("%s %s!", message, fname);</p> ``` C Exercises To further enhance your C skills, consider the following exercise: Exercise: Create a "string" named greetings, and assign it the value "Hello". ``` <p>_greetings[] = "Hello";</p> ``` Submit your answer, and start your exercise. Pathfinder - Track your progress today!