Basic Syntax of C

Comments

In C, you can add comments to your code to make it more readable and to provide explanations. There are two types of comments:

• Single-line comments start with two forward slashes (//) and continue until the end of the line.
• Multi-line comments start with /* and end with */. They can span multiple lines.

// This is a single-line comment

/*
  This is a
  multi-line comment
*/
    

Main Function

In C, every program must have a main() function. It serves as the entry point of the program.

#include <stdio.h>

int main() {
    // Code goes here
    return 0;
}
    

Semicolons

In C, statements must be terminated with a semicolon (;). The semicolon indicates the end of a statement.

#include <stdio.h>

int main() {
    printf("Hello, World!"); // Statement ends with a semicolon
    return 0;
}
    

Braces

Curly braces ({}) are used to define blocks of code. They are used to group multiple statements together.

#include <stdio.h>

int main() {
    // Code block starts
    int x = 5;
    if (x > 0) {
        printf("Positive");
    }
    // Code block ends
    
    return 0;
}
    

Data Types

C supports various data types to represent different kinds of values, such as integers, floating-point numbers, characters, and more.

#include <stdio.h>

int main() {
    int num = 10; // Integer
    float pi = 3.14; // Floating-point number
    char letter = 'A'; // Character
    return 0;
}