C Programming Codes

Even or Odd: Can you tell in a blink?

#include <stdio.h>

int main() {
    int num;

    printf("Enter an integer: ");
    scanf("%d", &num);

    if (num % 2 == 0) {
        printf("%d is even.\n", num);
    } else {
        printf("%d is odd.\n", num);
    }

    return 0;
}

#Cprogramming #DataTypes #Basics

C Data Types: Can You Name and Print Them All?

#include <stdio.h>

int main() {
    int integer_variable = 10;
    float float_variable = 3.14;
    char char_variable = 'A';
    double double_variable = 3.14159;
    short short_variable = 5;
    long long_variable = 1234567890;
    unsigned int unsigned_variable = 4294967295;

    printf("Integer: %d\n", integer_variable);
    printf("Float: %f\n", float_variable);
    printf("Character: %c\n", char_variable);
    printf("Double: %lf\n", double_variable);
    printf("Short: %hd\n", short_variable);
    printf("Long: %ld\n", long_variable);
    printf("Unsigned Integer: %u\n", unsigned_variable);

    return 0;
}

✨ C Programming: Variables, Data Types, & Operators - Demystified! ✨ Hey coders! Let's break down the basics of C: variables, data types, and operators. **What are Variables?** * Think of variables as containers in your computer's memory. * They hold values (like numbers or text) that your program uses. * You give each container a name (the variable name) to easily access it. * Example: `int age = 25;` ( `age` is the variable holding the value 25) **Data Types: What goes inside the container?** * Data types define the kind of data a variable can store. * Common data types in C: * `int`: Whole numbers (e.g., 10, -5, 0) * `float`: Decimal numbers (e.g., 3.14, -2.5) * `char`: Single characters (e.g., 'A', '7', '$') * `double`: Decimal numbers with higher precision * Specifying the data type tells the computer how much memory to allocate. **Operators: Doing Stuff with Variables** * Operators are symbols that perform operations on variables and values. * Examples: * Arithmetic Operators: `+` (addition), `-` (subtraction), `*` (multiplication), `/` (division), `%` (modulus - remainder after division) * Assignment Operator: `=` (assigns a value to a variable) * Comparison Operators: `==` (equal to), `!=` (not equal to), `>` (greater than), `<` (less than), `>=` (greater than or equal to), `<=` (less than or equal to) * Example: `int sum = age + 10;` ( `+` operator adds 10 to the value of `age`, and `=` assigns the result to `sum` ) **In Simple Terms:** Imagine you're baking a cake: * Variables are like bowls (holding ingredients). * Data types are like the ingredients (flour, sugar, etc.). * Operators are like your hands (mixing, stirring). That's it for now! Keep coding and experimenting! 🚀

#Cprogramming #Calculator #SwitchCase

Can you build a basic calculator in C using switch?

#include <stdio.h>

int main() {
    char op;
    double num1, num2;

    printf("Enter an operator (+, -, *, /): ");
    scanf(" %c", &op);

    printf("Enter two operands: ");
    scanf("%lf %lf", &num1, &num2);

    switch (op) {
        case '+':
            printf("%.1lf + %.1lf = %.1lf", num1, num2, num1 + num2);
            break;
        case '-':
            printf("%.1lf - %.1lf = %.1lf", num1, num2, num1 - num2);
            break;
        case '*':
            printf("%.1lf * %.1lf = %.1lf", num1, num2, num1 * num2);
            break;
        case '/':
            if (num2 != 0) {
                printf("%.1lf / %.1lf = %.1lf", num1, num2, num1 / num2);
            } else {
                printf("Error: Division by zero");
            }
            break;
        default:
            printf("Error: Invalid operator");
    }

    return 0;
}

#CProgramming #MemoryManagement #DataTypes

Unlocking Memory: How Big is an int in C?

#include <stdio.h>

int main() {
 printf("Size of int: %lu bytes\n", sizeof(int));
 printf("Size of float: %lu bytes\n", sizeof(float));
 printf("Size of char: %lu byte\n", sizeof(char));
 printf("Size of double: %lu bytes\n", sizeof(double));
 return 0;
}

#Cprogramming #swapNumbers #interviewQuestion

Can you swap two numbers in C without a temporary variable?

#include <stdio.h>

int main() {
 int a = 10;
 int b = 20;

 a = a + b;
 b = a - b;
 a = a - b;

 printf("a = %d, b = %d\n", a, b);
 return 0;
}

#Cprogramming #Swapping #Fundamentals

Swapping Numbers in C: The Classic Way!

#include <stdio.h>

int main() {
  int a = 10;
  int b = 20;
  int temp;

  printf("Before swap: a = %d, b = %d\n", a, b);

  temp = a;
  a = b;
  b = temp;

  printf("After swap: a = %d, b = %d\n", a, b);

  return 0;
}

Cprogramming Basics Arithmetic

Let's Master Addition in C!

#include <stdio.h>

int main() {
 int num1, num2, sum;
 printf("Enter two integers: ");
 scanf("%d %d", &num1, &num2);
 sum = num1 + num2;
 printf("Sum = %d\n", sum);
 return 0;
}

#CProgramming #BeginnerCode #InputOutput

What's Your Name and Age? A C Programming Introduction!

#include <stdio.h>

int main() {
 char name[50];
 int age;

 printf("Enter your name: ");
 scanf("%s", name);

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

 printf("Hello, %s! You are %d years old.\n", name, age);

 return 0;
}

#CProgramming #HelloWorld #BeginnerCode

The Classic Hello World: Your First Step in C Programming!

#include <stdio.h>

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

C Programming: Hello World! 👋 Ready to dive into the world of coding? C is a great place to start! Let's cover the basics. What is C? * A powerful, general-purpose programming language. * Foundation for many other languages (like C++, Java, Python). * Used in system programming, embedded systems, and more! Basic Syntax 📜 * Think of it as grammar for computers. * **`#include <stdio.h>`:** Includes standard input/output library (for printing to the screen and getting input). * **`int main() { ... }`:** The main function where your program starts executing. * **`printf("Hello, World!\n");`:** Prints "Hello, World!" to the console. `\n` creates a new line. * **`return 0;`:** Indicates that the program executed successfully. * Every statement ends with a semicolon (`;`). Your First Program 🚀 ```c #include <stdio.h> int main() { printf("Hello, World!\n"); return 0; } ``` Simple I/O (Input/Output) ⌨️ * **`printf()`:** Prints output to the console. * Example: `printf("The value is: %d\n", 10);` (%d is a placeholder for integers). * **`scanf()`:** Reads input from the console. * Example: `int age; scanf("%d", &age);` (&age means "address of age"). Let's try an example! ```c #include <stdio.h> int main() { int age; printf("Enter your age: "); scanf("%d", &age); printf("You are %d years old.\n", age); return 0; } ``` Next Steps ➡️ * Experiment! Change the text, try different numbers. * Learn about variables, data types, and operators. * Practice makes perfect! #Cprogramming #beginners #coding #tutorial

🚀 **C Programming: Hello, World! 👋** 🚀 Ready to dive into the world of coding? Let's start with C, a powerful and foundational language! **What is C?** * C is a general-purpose programming language. * It's known for its efficiency and control. * It's used for system programming, embedded systems, and more! **Your First C Program: Hello, World!** Here's the classic "Hello, World!" program: ```c #include <stdio.h> int main() { printf("Hello, World!\n"); return 0; } ``` **Let's Break it Down:** * `#include <stdio.h>`: This line *includes* the standard input/output library. Think of it as borrowing tools for printing and reading. * `int main() { ... }`: This is the *main function*. Your program starts executing here. The `int` means the function will return an integer value. * `printf("Hello, World!\n");`: This *prints* "Hello, World!" to the console. `printf` is a function from `stdio.h`. `\n` adds a newline. * `return 0;`: This indicates that the program executed successfully. **Basic Syntax:** * Statements end with a semicolon `;` * Curly braces `{}` define blocks of code. * Comments: `// This is a single-line comment` or `/* This is a multi-line comment */` **Simple Input/Output (I/O):** * `printf()`: Prints output to the console. * Example: `printf("The value is: %d\n", 10);` (%d is a placeholder for an integer) * `scanf()`: Reads input from the console. * Example: `int age; scanf("%d", &age);` (Reads an integer and stores it in the `age` variable. `&` is important! It's the "address of" operator). **Next Steps:** * Install a C compiler (like GCC). * Try compiling and running the "Hello, World!" program. * Experiment with `printf` and `scanf`. * Learn about variables and data types (int, float, char, etc.). Happy coding! 🚀