Anatomy of a C program

C is compiled: your source is translated to machine code before it runs. Every program starts at main:

#include <stdio.h>      // gives us printf

int main(void) {
    printf("Hello, World!\n");
    return 0;           // 0 means "success"
}

• #include pulls in a header with function declarations.
• printf prints formatted text. \n is a newline – C does not add one for you.
• Every statement ends with ;.

Try it

Make the program print:

Hello, C!