Session 9 Homework - Switch Statements

📚 What You'll Practice

This homework focuses on mastering switch statements, creating menu-driven programs, understanding case grouping, break statements, and default cases.

Goal: Become an expert in building interactive menu systems!

📋 Instructions

Master switch statement syntax and structure
Understand case labels and break statements
Practice case grouping for shared actions
Use default case for invalid inputs
Build practical menu-driven programs

🎮 Program 1: Basic Switch Statement - Game Menu

Create a simple game selection menu!

What it does:

Demonstrates basic switch statement structure with case labels, break statements, and default case for menu selection.

#include <stdio.h>

int main() {
    int game_choice;
    
    printf("=== GAME MENU ===\n");
    printf("1. Minecraft Adventure\n");
    printf("2. Roblox World\n");
    printf("3. Fortnite Battle\n");
    printf("4. Exit\n");
    printf("Enter your choice (1-4): ");
    scanf("%d", &game_choice);
    
    switch (game_choice) {
        case 1:
            printf("🎮 Starting Minecraft Adventure...\n");
            printf("Building your world! 🏗️\n");
            break;
        
        case 2:
            printf("🎮 Entering Roblox World...\n");
            printf("Ready to explore! 🌍\n");
            break;
        
        case 3:
            printf("🎮 Launching Fortnite Battle...\n");
            printf("Battle Royale mode! ⚔️\n");
            break;
        
        case 4:
            printf("👋 Thanks for playing! Goodbye!\n");
            break;
        
        default:
            printf("❌ Invalid choice! Please select 1-4.\n");
    }
    
    return 0;
}

🧪 Test Cases

Choice 1 → Minecraft Adventure message
Choice 2 → Roblox World message
Choice 3 → Fortnite Battle message
Choice 4 → Exit message
Choice 5 → Invalid choice message

🍽️ Program 2: Restaurant Menu System

Build a complete restaurant order system!

What it does:

Creates a restaurant menu using switch statements with prices and descriptions for each menu item.

#include <stdio.h>

int main() {
    int menu_choice;
    int quantity;
    int total_price;
    
    printf("=== RESTAURANT MENU ===\n");
    printf("1. Pizza - ₹200\n");
    printf("2. Burger - ₹150\n");
    printf("3. Samosa - ₹20\n");
    printf("4. Dosa - ₹80\n");
    printf("5. Biryani - ₹250\n");
    printf("Enter your choice (1-5): ");
    scanf("%d", &menu_choice);
    
    printf("Enter quantity: ");
    scanf("%d", &quantity);
    
    switch (menu_choice) {
        case 1:
            total_price = 200 * quantity;
            printf("🍕 Pizza x%d ordered!\n", quantity);
            printf("Total: ₹%d\n", total_price);
            break;
        
        case 2:
            total_price = 150 * quantity;
            printf("🍔 Burger x%d ordered!\n", quantity);
            printf("Total: ₹%d\n", total_price);
            break;
        
        case 3:
            total_price = 20 * quantity;
            printf("🥟 Samosa x%d ordered!\n", quantity);
            printf("Total: ₹%d\n", total_price);
            break;
        
        case 4:
            total_price = 80 * quantity;
            printf("🥞 Dosa x%d ordered!\n", quantity);
            printf("Total: ₹%d\n", total_price);
            break;
        
        case 5:
            total_price = 250 * quantity;
            printf("🍛 Biryani x%d ordered!\n", quantity);
            printf("Total: ₹%d\n", total_price);
            break;
        
        default:
            printf("❌ Invalid menu choice! Please select 1-5.\n");
    }
    
    return 0;
}

🧪 Test Cases

Choice 1, Quantity 2 → Pizza x2, Total ₹400
Choice 3, Quantity 5 → Samosa x5, Total ₹100
Choice 5, Quantity 1 → Biryani x1, Total ₹250
Choice 6 → Invalid choice message

🔗 Program 3: Case Grouping - Sports Categories

Learn to group cases for shared actions!

What it does:

Demonstrates case grouping where multiple case labels share the same action, making code more efficient and readable.

#include <stdio.h>

int main() {
    int sports_choice;
    
    printf("=== SPORTS CATEGORY ===\n");
    printf("1. Football\n");
    printf("2. Cricket\n");
    printf("3. Basketball\n");
    printf("4. Tennis\n");
    printf("5. Badminton\n");
    printf("Enter your choice (1-5): ");
    scanf("%d", &sports_choice);
    
    switch (sports_choice) {
        case 1:
        case 2:
        case 3:
            printf("⚽ Team Sport Selected!\n");
            printf("These sports require teamwork! 👥\n");
            break;
        
        case 4:
        case 5:
            printf("🎾 Individual Sport Selected!\n");
            printf("These sports focus on individual skills! 🏆\n");
            break;
        
        default:
            printf("❌ Invalid sport choice!\n");
    }
    
    return 0;
}

🧪 Test Cases

Choice 1, 2, or 3 → Team Sport message
Choice 4 or 5 → Individual Sport message
Choice 6 → Invalid choice message

🎯 Program 4: Complete Menu System

Build a comprehensive menu-driven program!

What it does:

Creates a complete menu system with multiple options, calculations, and user interactions using switch statements.

#include <stdio.h>

int main() {
    int choice;
    int num1, num2, result;
    char operation;
    
    printf("=== CALCULATOR MENU ===\n");
    printf("1. Addition\n");
    printf("2. Subtraction\n");
    printf("3. Multiplication\n");
    printf("4. Division\n");
    printf("5. Modulo\n");
    printf("Enter your choice (1-5): ");
    scanf("%d", &choice);
    
    switch (choice) {
        case 1:
            printf("Enter two numbers: ");
            scanf("%d %d", &num1, &num2);
            result = num1 + num2;
            printf("Result: %d + %d = %d\n", num1, num2, result);
            break;
        
        case 2:
            printf("Enter two numbers: ");
            scanf("%d %d", &num1, &num2);
            result = num1 - num2;
            printf("Result: %d - %d = %d\n", num1, num2, result);
            break;
        
        case 3:
            printf("Enter two numbers: ");
            scanf("%d %d", &num1, &num2);
            result = num1 * num2;
            printf("Result: %d * %d = %d\n", num1, num2, result);
            break;
        
        case 4:
            printf("Enter two numbers: ");
            scanf("%d %d", &num1, &num2);
            if (num2 != 0) {
                result = num1 / num2;
                printf("Result: %d / %d = %d\n", num1, num2, result);
            } else {
                printf("❌ Error: Division by zero!\n");
            }
            break;
        
        case 5:
            printf("Enter two numbers: ");
            scanf("%d %d", &num1, &num2);
            if (num2 != 0) {
                result = num1 % num2;
                printf("Result: %d %% %d = %d\n", num1, num2, result);
            } else {
                printf("❌ Error: Modulo by zero!\n");
            }
            break;
        
        default:
            printf("❌ Invalid choice! Please select 1-5.\n");
    }
    
    return 0;
}

🧪 Test Cases

Choice 1, Numbers 10, 5 → Result: 15
Choice 2, Numbers 20, 8 → Result: 12
Choice 3, Numbers 6, 7 → Result: 42
Choice 4, Numbers 15, 3 → Result: 5
Choice 4, Numbers 10, 0 → Error message
Choice 5, Numbers 17, 5 → Result: 2

📅 Program 5: Day of Week Classifier

Classify days using switch statements!

What it does:

Uses switch statements to classify days of the week into weekdays and weekends, demonstrating practical case grouping.

#include <stdio.h>

int main() {
    int day;
    
    printf("=== DAY OF WEEK ===\n");
    printf("1. Monday\n");
    printf("2. Tuesday\n");
    printf("3. Wednesday\n");
    printf("4. Thursday\n");
    printf("5. Friday\n");
    printf("6. Saturday\n");
    printf("7. Sunday\n");
    printf("Enter day number (1-7): ");
    scanf("%d", &day);
    
    switch (day) {
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
            printf("📅 Weekday - Time to work! 💼\n");
            printf("Stay focused and productive!\n");
            break;
        
        case 6:
        case 7:
            printf("🎉 Weekend - Time to relax! 🎮\n");
            printf("Enjoy your free time!\n");
            break;
        
        default:
            printf("❌ Invalid day! Please enter 1-7.\n");
    }
    
    return 0;
}

🧪 Test Cases

Day 1-5 → Weekday message
Day 6-7 → Weekend message
Day 8 → Invalid day message

🏠 Session 9 Homework

Switch Statements - Menu Master

📚 What You'll Practice

📋 Instructions

🎮 Program 1: Basic Switch Statement - Game Menu

What it does:

🧪 Test Cases

🍽️ Program 2: Restaurant Menu System

What it does:

🧪 Test Cases

🔗 Program 3: Case Grouping - Sports Categories

What it does:

🧪 Test Cases

🎯 Program 4: Complete Menu System

What it does:

🧪 Test Cases

📅 Program 5: Day of Week Classifier

What it does:

🧪 Test Cases

🎯 Remember