What is C Programming Language?

What is C?

C is a low-level, compiled language created by Dennis Ritchie in 1972. It's the foundation of operating systems, embedded devices, and many other languages (C++, Java, Python's interpreter are written in or influenced by C).

Hello World

#include <stdio.h>

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

Why Learn C?

• Teaches how memory and computers truly work.
• Powers Linux, Windows kernels, and embedded systems.
• Extremely fast — minimal runtime overhead.

Key Features

• Manual memory management (malloc/free).
• Pointers for direct memory access.
• Compiles to highly optimised machine code.

FAQs

C vs C++?

C++ adds OOP and more features on top of C. C is simpler and more minimal. More in our C guides.

Is C still used?

Yes — in OS kernels, embedded systems, IoT, and performance-critical code.