Syntax

C syntax refers to the rules and structure governing the writing of programs in the C programming language.

Example:

#include <stdio.h>

int main() {
  printf("Hello World!");
  return 0;
}

Example Explained

1. #include <stdio.h>: This line includes the standard input-output library (stdio.h). This library provides functions like printf and scanf that are used for input and output operations.
2. int main() { ... }: This is the main function of the program. All C programs must have a main function, and execution of the program starts from here. It returns an integer (int) value, usually 0, to indicate the successful execution of the program.
3. printf("Hello World!");: This line prints the string "Hello World!" to the standard output. The printf function is used for formatted output, and "Hello World!" is the format string that specifies the text to be printed.
4. return 0;: This line indicates the end of the main function and returns an integer value 0 to the calling environment (typically the operating system). This value indicates that the program executed successfully. The return 0; statement is optional in the main function, but it’s good practice to include it for clarity.