C Rules and Targets 🎯

Welcome to our deep dive into the world of C programming! In this lesson, we'll cover the essential rules and targets that every C programming beginner and intermediate should know. 📝

Understanding C 💡

C is a high-level, general-purpose programming language that emphasizes low-level memory access. It's used extensively in system software, device drivers, embedded systems, and game development.

Basic Syntax and Rules 📝

Variables and Data Types

Integer: int varName;
Float: float varName;
Character: char varName;
Boolean: In C, boolean values are represented using 0 (false) and non-zero values (true). int isTrue = 1;

Operators

Arithmetic: +, -, *, /, %
Assignment: =
Comparison: ==, !=, <, >, <=, >=
Logical: &&, ||

Control Structures

If Statement:
c
if (condition) { // Code to be executed if condition is true }
If-Else Statement:
c
if (condition) { // Code to be executed if condition is true } else { // Code to be executed if condition is false }
Switch-Case Statement:
c
switch (expression) { case constant_expression1: // Code to be executed if expression matches constant_expression1 break; case constant_expression2: // Code to be executed if expression matches constant_expression2 break; // More cases... default: // Code to be executed if expression doesn't match any case }

Practical Examples 💡

Example 1: Simple Input and Output

#include <stdio.h>

int main() {
  int number;

  printf("Enter a number: ");
  scanf("%d", &number);

  printf("You entered: %d\n", number);

  return 0;
}

Example 2: Basic Decision Making

#include <stdio.h>

int main() {
  int age;

  printf("Enter your age: ");
  scanf("%d", &age);

  if (age >= 18) {
    printf("You are eligible to vote.\n");
  } else {
    printf("You are not eligible to vote.\n");
  }

  return 0;
}

Quiz 💡

By the end of this lesson, you should have a solid understanding of the basic syntax, data types, operators, and control structures in C programming. Happy coding! 🎉