C Syntax
Example Program
Let’s look at the basic C program 👇
#include <stdio.h>
int main() {
printf(“Hello, World!”);
return 0;
}
Now let’s break it down and understand each part clearly 👇
- #include <stdio.h>
- This is a preprocessor directive.
- It tells the compiler to include the Standard Input Output library before compilation.
- This library contains functions like printf() and scanf().
👉 Without this line, you can’t use input/output functions.
- int main()
- Every C program must have one main() function.
- Execution of the program starts from the main() function.
- The keyword int means that the function returns an integer value (normally 0).
- { } (Curly Braces)
- These curly braces define the body of the main function.
- All the code to be executed is written inside these braces.
- printf(“Hello, World!”);
- printf() is used to display text or output on the screen.
- “Hello, World!” is a string, and it will appear on the output screen.
- Every statement in C ends with a semicolon ( ; ).
- return 0;
- This line returns a value from the main function to the operating system.
- 0 indicates that the program ended successfully without errors.
Simple Explanation
#include → add library
main() → starting point
{ } → code area
printf() → output
return 0; → program finished correctly
