C Introduction

What C is and why it still matters.

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C is a general-purpose programming language created by Dennis Ritchie at Bell Labs in 1972. It is one of the most influential languages ever: C++, C#, Java, JavaScript and PHP all borrow its syntax.

Why learn C?

It is very fast and gives you direct control over memory.
Operating systems (Linux, Windows kernels), databases and embedded devices are written in C.
Learning C teaches how computers really work.

Key Takeaways: C Introduction

Mastering C Introduction helps you write clean and reliable C code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

C Introduction Code Example

#include <stdio.h>

int main() {
    printf("Hello, CodesInTech!\n");
    return 0;
}

Output

Hello, CodesInTech!

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

C Introduction Practice Exercises

Check what you learned in “C Introduction”.

/ 2 solved

Fill in the blank

Include the standard input/output library.

#include <>

✓ Correct! Not quite. Try again.

Multiple choice

Who created C?

Dennis Ritchie Bjarne Stroustrup James Gosling Guido van Rossum

✓ Correct! Not quite. Try again.

to save your exercise progress.

Finished this lesson?

Mark it complete to track your progress.

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C Get Started

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C Introduction

Why learn C?

💡 Key Takeaways: C Introduction

C Introduction Code Example

C Introduction Practice Exercises

Key Takeaways: C Introduction