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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 »

Fynd Academy Pathfinder

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

String Functions In C, functions for string operations are readily available. To include them in your program, make sure to include the header file <string.h>. ```html <p>#include &lt;string.h&gt;</p> ``` Finding the Length of a String To find the length of a string, the function strlen() is used. ```html <pre> char alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; printf("%d", strlen(alphabet)); </pre> ``` It is important to know that the sizeof will return the memory size in bytes, not the string length. ```html <pre> char alphabet[50] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; printf("%d", strlen(alphabet));   printf("%d", sizeof(alphabet));   </pre> ``` Concatenating Strings The strcat() function can be used to concatenate two strings. ```html <pre> char str1[20] = "Hello "; char str2[] = "World!"; strcat(str1, str2); printf("%s", str1); </pre> ``` The size of str1 should be large enough to store the result of the two strings combined. Copying Strings To copy value of one string to another, strcpy() function is used. ```html <pre> char str1[20] = "Hello World!"; char str2[20]; strcpy(str2, str1); printf("%s", str2); </pre> ``` Ensure the size of str2 is large enough to store the copied string. Comparing Strings Utility for comparing two strings is available in the form of strcmp() function. ```html <pre> char str1[] = "Hello"; char str2[] = "Hello"; char str3[] = "Hi"; printf("%d\n", strcmp(str1, str2)); printf("%d\n", strcmp(str1, str3)); </pre> ``` This function returns 0 if the two strings are equal, otherwise a value that is not 0. Make sure to track your progress - it's cheap and convenient at Fynd Academy!