Code the Scenario Problems on Structures in C (with Answers)

#include <stdio.h>

struct Car {
    char model[50];
    int year;
    float price;
};

int main() {
    struct Car c;
    
    printf("Enter car model (single word): ");
    scanf("%s", c.model);
    
    printf("Enter year of manufacture: ");
    scanf("%d", &c.year);
    
    printf("Enter car price: ");
    scanf("%f", &c.price);
    
    printf("\nCar Details\n");
    printf("Model: %s\nYear: %d\nPrice: $%.2f\n", c.model, c.year, c.price);
    
    return 0;
}

#include <stdio.h>

struct Student {
    char name[50];
    int roll_no;
    int marks[3];
};

int main() {
    struct Student s;
    int sum = 0;
    
    printf("Enter student name: ");
    scanf("%s", s.name);
    printf("Enter roll number: ");
    scanf("%d", &s.roll_no);
    
    printf("Enter marks in 3 subjects: ");
    for (int i = 0; i < 3; i++) {
        scanf("%d", &s.marks[i]);
        sum += s.marks[i];
    }
    
    float average = sum / 3.0;
    
    printf("\nStudent Report Card\n");
    printf("Name: %s\nRoll Number: %d\n", s.name, s.roll_no);
    printf("Average Marks: %.2f\n", average);
    
    return 0;
}

#include <stdio.h>

struct Employee {
    char name[50];
    int emp_id;
    float salary;
};

int main() {
    struct Employee e;
    
    printf("Enter employee name: ");
    scanf("%s", e.name);
    printf("Enter employee ID: ");
    scanf("%d", &e.emp_id);
    printf("Enter monthly salary: ");
    scanf("%f", &e.salary);
    
    float annual_salary = e.salary * 12;
    
    printf("\nEmployee Details\n");
    printf("Name: %s\nEmployee ID: %d\n", e.name, e.emp_id);
    printf("Annual Salary: %.2f\n", annual_salary);
    
    return 0;
}

#include <stdio.h>

struct Book {
    char title[50];
    char author[50];
    int year;
    int isAvailable; // 1 for available, 0 for not available
};

int main() {
    int n;
    printf("Enter the number of books: ");
    scanf("%d", &n);

    struct Book books[n];

    for (int i = 0; i < n; i++) {
        printf("\nEnter details for book %d:\n", i + 1);
        printf("Title: ");
        scanf("%s", books[i].title);
        printf("Author: ");
        scanf("%s", books[i].author);
        printf("Year of Publication: ");
        scanf("%d", &books[i].year);
        printf("Is the book available? (1 for Yes, 0 for No): ");
        scanf("%d", &books[i].isAvailable);
    }

    printf("\nAvailable Books:\n");
    for (int i = 0; i < n; i++) {
        if (books[i].isAvailable == 1) {
            printf("Title: %s, Author: %s, Year: %d\n", books[i].title, books[i].author, books[i].year);
        }
    }

    return 0;
}

#include <stdio.h>

struct Car {
    char brand[50];
    char model[50];
    float rentalCost;
    int isAvailable; // 1 for available, 0 for rented
};

int main() {
    int n;
    printf("Enter the number of cars available: ");
    scanf("%d", &n);

    struct Car cars[n];

    for (int i = 0; i < n; i++) {
        printf("\nEnter details for car %d:\n", i + 1);
        printf("Brand: ");
        scanf("%s", cars[i].brand);
        printf("Model: ");
        scanf("%s", cars[i].model);
        printf("Rental Cost per day: ");
        scanf("%f", &cars[i].rentalCost);
        printf("Is the car available? (1 for Yes, 0 for No): ");
        scanf("%d", &cars[i].isAvailable);
    }

    char requestedModel[50];
    printf("\nEnter the model of the car you want to rent: ");
    scanf("%s", requestedModel);

    int found = 0;
    for (int i = 0; i < n; i++) {
        int j = 0, match = 1;
        while (cars[i].model[j] != '\0' && requestedModel[j] != '\0') {
            if (cars[i].model[j] != requestedModel[j]) {
                match = 0;
                break;
            }
            j++;
        }
       
        if (match && cars[i].isAvailable == 1) {
            int rentalDays;
            printf("Enter number of days to rent the car: ");
            scanf("%d", &rentalDays);

            float totalCost = rentalDays * cars[i].rentalCost;
            cars[i].isAvailable = 0; // Mark as rented

            printf("\nCar Rented Successfully!\n");
            printf("Brand: %s, Model: %s\n", cars[i].brand, cars[i].model);
            printf("Total Rental Cost: %.2f\n", totalCost);
            found = 1;
            break;
        }
    }

    if (!found) {
        printf("Sorry, the requested car is either not available or already rented.\n");
    }

    return 0;
}

#include <stdio.h>

struct Product {
    char name[50];
    float price;
    int stock;
};

int main() {
    int n, quantity, found = 0;
    char productName[50];
    printf("Enter number of products: ");
    scanf("%d", &n);

    struct Product products[n];

    for (int i = 0; i < n; i++) {
        printf("Enter product name: ");
        scanf("%s", products[i].name);
        printf("Enter price per unit: ");
        scanf("%f", &products[i].price);
        printf("Enter available stock: ");
        scanf("%d", &products[i].stock);
    }

    printf("Enter product name to buy: ");
    scanf("%s", productName);
    printf("Enter quantity: ");
    scanf("%d", &quantity);

    for (int i = 0; i < n; i++) {
        int j = 0, match = 1;
        while (products[i].name[j] != '\0' || productName[j] != '\0') {
            if (products[i].name[j] != productName[j]) {
                match = 0;
                break;
            }
            j++;
        }
        if (match) {
            found = 1;
            if (products[i].stock >= quantity) {
                products[i].stock -= quantity;
                printf("Purchase confirmed! Total cost: %.2f\n", quantity * products[i].price);
                printf("Stock remaining: %d\n", products[i].stock);
            } else {
                printf("Requested quantity not available. Stock available: %d\n", products[i].stock);
            }
            break;
        }
    }

    if (!found) {
        printf("Product not found.\n");
    }

    return 0;
}

#include <stdio.h>

struct Movie {
    char name[50];
    char genre[20];
    int year;
    float rating;
};

int main() {
    int n;
    float threshold;

    printf("Enter number of movies: ");
    scanf("%d", &n);
    getchar(); // to consume newline after number input

    struct Movie movies[n];

    for (int i = 0; i < n; i++) {
        printf("Movie %d\n",i+1);
        printf("Enter movie name: ");
        fgets(movies[i].name, sizeof(movies[i].name), stdin);

        printf("Enter genre: ");
        fgets(movies[i].genre, sizeof(movies[i].genre), stdin);

        printf("Enter release year: ");
        scanf("%d", &movies[i].year);

        printf("Enter rating (out of 10): ");
        scanf("%f", &movies[i].rating);
        getchar(); 
    }

    printf("Enter rating threshold: ");
    scanf("%f", &threshold);

    printf("Movies rated above %.1f:\n", threshold);
    for (int i = 0; i < n; i++) {
        if (movies[i].rating > threshold) {
            printf("Movie: %s",movies[i].name);
            printf("Genre: %s",movies[i].genre);
            printf("Year: %d\n",movies[i].year);
            printf("Rating: %.1f\n",movies[i].rating);
            printf("-------------\n");
        }
    }

    return 0;
}

#include <stdio.h>

struct Attendee {
    char name[50];
    int age;
    char activity[20];
};

int main() {
    int n;
    printf("Enter number of attendees: ");
    scanf("%d", &n);
    getchar();

    struct Attendee attendees[n];

    for (int i = 0; i < n; i++) {
        printf("Enter attendee name: ");
        fgets(attendees[i].name, sizeof(attendees[i].name), stdin);

        printf("Enter age: ");
        scanf("%d", &attendees[i].age);
        getchar(); 

        printf("Enter preferred activity (sports/arts/music/gaming): ");
        fgets(attendees[i].activity, sizeof(attendees[i].activity), stdin);
    }

    char activities[4][20] = {"sports\n", "arts\n", "music\n", "gaming\n"};

    for (int i = 0; i < 4; i++) {
        printf("\nAttendees interested in %s", activities[i]);
        for (int j = 0; j < n; j++) {
            int k = 0, match = 1;
            while (activities[i][k] != '\0' && attendees[j].activity[k] != '\0') {
                if (activities[i][k] != attendees[j].activity[k]) {
                    match = 0;
                    break;
                }
                k++;
            }
            if (match) {
                printf("%sAge: %d\n", attendees[j].name, attendees[j].age);
            }
        }
    }

    return 0;
}

#include <stdio.h>

struct WeatherRecord {
    int day;
    int month;
    int year;
    float highTemp;
    float lowTemp;
};

int main() {
    int numDays;
    printf("Enter number of days to record temperatures: ");
    scanf("%d", &numDays);

    struct WeatherRecord weatherRecords[numDays];

    for (int i = 0; i < numDays; i++) {
        printf("\nEnter details for day %d:\n", i + 1);
        printf("Day: ");
        scanf("%d", &weatherRecords[i].day);
        printf("Month: ");
        scanf("%d", &weatherRecords[i].month);
        printf("Year: ");
        scanf("%d", &weatherRecords[i].year);
        printf("Highest temperature: ");
        scanf("%f", &weatherRecords[i].highTemp);
        printf("Lowest temperature: ");
        scanf("%f", &weatherRecords[i].lowTemp);
    }

    struct WeatherRecord highest = weatherRecords[0];
    struct WeatherRecord lowest = weatherRecords[0];

    for (int i = 1; i < numDays; i++) {
        if (weatherRecords[i].highTemp > highest.highTemp) {
            highest = weatherRecords[i];
        }
        if (weatherRecords[i].lowTemp < lowest.lowTemp) {
            lowest = weatherRecords[i];
        }
    }

    printf("\nHighest temperature was %.2f°C on %d/%d/%d\n", highest.highTemp, highest.day, highest.month, highest.year);
    printf("Lowest temperature was %.2f°C on %d/%d/%d\n", lowest.lowTemp, lowest.day, lowest.month, lowest.year);

    return 0;
}

#include <stdio.h>

struct Spellbook {
    char spellName[50];
    int difficulty;
};

int main() {
    int numSpellbooks, wizardSkill;
    printf("Enter number of spellbooks: ");
    scanf("%d", &numSpellbooks);

    struct Spellbook spellbooks[numSpellbooks];

    for (int i = 0; i < numSpellbooks; i++) {
        printf("\nEnter spell name: ");
        scanf("%s", spellbooks[i].spellName);
        printf("Enter spell difficulty level: ");
        scanf("%d", &spellbooks[i].difficulty);
    }

    printf("\nEnter wizard's skill level: ");
    scanf("%d", &wizardSkill);

    printf("\nSpells that the wizard can learn:\n");
    for (int i = 0; i < numSpellbooks; i++) {
        if (spellbooks[i].difficulty <= wizardSkill) {
            printf("Spell: %s, Difficulty: %d\n", spellbooks[i].spellName, spellbooks[i].difficulty);
        }
    }

    return 0;
}

#include <stdio.h>

struct Item {
    char name[30];
    int weight;
    int power;
    float ratio;
};

int main() {
    int numItems, capacity, currentWeight = 0, totalPower = 0;
    printf("Enter number of magical items: ");
    scanf("%d", &numItems);

    struct Item items[numItems], temp;

    for(int i = 0; i < numItems; i++) {
        printf("\nEnter item name: ");
        scanf("%s", items[i].name);
        printf("Enter item weight: ");
        scanf("%d", &items[i].weight);
        printf("Enter magical power: ");
        scanf("%d", &items[i].power);
        items[i].ratio = (float)items[i].power / items[i].weight;
    }

    printf("\nEnter your carrying capacity: ");
    scanf("%d", &capacity);

    for(int i = 0; i < numItems-1; i++) {
        for(int j = 0; j < numItems-i-1; j++) {
            if(items[j].ratio < items[j+1].ratio) {
                temp = items[j];
                items[j] = items[j+1];
                items[j+1] = temp;
            }
        }
    }

    printf("\nSelected items for the quest:\n");
    for(int i = 0; i < numItems; i++) {
        if(currentWeight + items[i].weight <= capacity) {
            printf("%s\n", items[i].name);
            currentWeight += items[i].weight;
            totalPower += items[i].power;
        }
    }

    printf("Total magical power: %d\n", totalPower);
    printf("Total weight: %d\n", currentWeight);

    return 0;
}

#include <stdio.h>

#define MAX_TEAMS 10
#define MAX_MATCHES 10

struct Team {
    int teamID;
    char name[50];
    int points[MAX_MATCHES];
    int *totalPoints;
};

int main() {
    int numTeams, numMatches;
    struct Team teams[MAX_TEAMS];
    int totalPointsArray[MAX_TEAMS];
    
    printf("Enter number of teams: ");
    scanf("%d", &numTeams);
    printf("Enter maximum number of matches per team: ");
    scanf("%d", &numMatches);
    
    for(int i = 0; i < numTeams; i++) {
        teams[i].totalPoints = &totalPointsArray[i];
        *teams[i].totalPoints = 0;
        
        printf("\nEnter Team ID: ");
        scanf("%d", &teams[i].teamID);
        printf("Enter Team Name: ");
        scanf("%s", teams[i].name);
        
        for(int j = 0; j < numMatches; j++) {
            printf("Enter points for Match %d: ", j + 1);
            scanf("%d", &teams[i].points[j]);
            *teams[i].totalPoints += teams[i].points[j];
        }
    }
    
    int highestAvgIndex = 0;
    float highestAvg = 0.0;
    
    printf("\nTeam Average Points:\n");
    for(int i = 0; i < numTeams; i++) {
        float avgPoints = (float)(*teams[i].totalPoints) / numMatches;
        printf("Team: %s, Average Points: %.2f\n", teams[i].name, avgPoints);
        
        if(avgPoints > highestAvg) {
            highestAvg = avgPoints;
            highestAvgIndex = i;
        }
    }
    
    printf("\nTeam with Highest Average Points:\n");
    printf("Team: %s, Average Points: %.2f\n", teams[highestAvgIndex].name, highestAvg);
    
    return 0;
}

#include <stdio.h>

struct Flight {
    char flightNumber[10];
    char departureCity[30];
    char destinationCity[30];
    char departureTime[10];
    char arrivalTime[10];
    int availableSeats;
};

int main() {
    int n, i, j, found = 0;
    char searchFlight[10];

    printf("Enter the number of flights: ");
    scanf("%d", &n);

    struct Flight flights[n]; 

    for (i = 0; i < n; i++) {
        printf("\nEnter details for flight %d:\n", i + 1);
        printf("Flight Number: ");
        scanf("%s", flights[i].flightNumber);
        printf("Departure City: ");
        scanf("%s", flights[i].departureCity);
        printf("Destination City: ");
        scanf("%s", flights[i].destinationCity);
        printf("Departure Time (HH:MM): ");
        scanf("%s", flights[i].departureTime);
        printf("Arrival Time (HH:MM): ");
        scanf("%s", flights[i].arrivalTime);
        printf("Available Seats: ");
        scanf("%d", &flights[i].availableSeats);
    }

    printf("\nEnter Flight Number to search: ");
    scanf("%s", searchFlight);

    for (i = 0; i < n; i++) {
        int isMatch = 1; 
        for (j = 0; flights[i].flightNumber[j] != '\0' || searchFlight[j] != '\0'; j++) {
            if (flights[i].flightNumber[j] != searchFlight[j]) {
                isMatch = 0;
                break;
            }
        }

        if (isMatch) {
            found = 1;
            printf("\nFlight Found! Details:\n");
            printf("Flight Number: %s\n", flights[i].flightNumber);
            printf("Departure: %s -> Destination: %s\n", flights[i].departureCity, flights[i].destinationCity);
            printf("Departure Time: %s, Arrival Time: %s\n", flights[i].departureTime, flights[i].arrivalTime);
            printf("Available Seats: %d\n", flights[i].availableSeats);

            if (flights[i].availableSeats > 0) {
                printf("\nSeat available! Booking now...\n");
                flights[i].availableSeats--; 
                printf("Booking Confirmed! Remaining seats: %d\n", flights[i].availableSeats);
            } else {
                printf("\nSorry, No seats available on this flight.\n");
            }
            break;
        }
    }

    if (!found) {
        printf("\nFlight Not Found!\n");
    }

    return 0;
}

#include <stdio.h>

struct Vehicle {
    char model[20];
    float fuelEfficiency; 
    float tankCapacity; 
    float speed; 
    float maxDistance;
};

int main() {
    int n, i, j, found = 0;
    char searchModel[20];
    float tripDistance, totalFuelRequired, totalTime;

    printf("Enter the number of vehicles: ");
    scanf("%d", &n);

    struct Vehicle vehicles[n]; 

    for (i = 0; i < n; i++) {
        printf("\nEnter details for vehicle %d:\n", i + 1);
        printf("Model Name: ");
        scanf("%s", vehicles[i].model);
        printf("Fuel Efficiency (km per liter): ");
        scanf("%f", &vehicles[i].fuelEfficiency);
        printf("Fuel Tank Capacity (liters): ");
        scanf("%f", &vehicles[i].tankCapacity);
        printf("Average Speed (km per hour): ");
        scanf("%f", &vehicles[i].speed);

        vehicles[i].maxDistance = vehicles[i].fuelEfficiency * vehicles[i].tankCapacity;
    }

    printf("\nVehicle Details:\n");
    for (i = 0; i < n; i++) {
        printf("Model: %s | Max Distance: %.2f km | Speed: %.2f km/h\n", 
               vehicles[i].model, vehicles[i].maxDistance, vehicles[i].speed);
    }

    printf("\nEnter Vehicle Model to check for trip: ");
    scanf("%s", searchModel);
    printf("Enter total trip distance (km): ");
    scanf("%f", &tripDistance);

    for (i = 0; i < n; i++) {
        int isMatch = 1;
        for (j = 0; vehicles[i].model[j] != '\0' || searchModel[j] != '\0'; j++) {
            if (vehicles[i].model[j] != searchModel[j]) {
                isMatch = 0;
                break;
            }
        }

        if (isMatch) {
            found = 1;
            printf("\nVehicle Found! Details:\n");
            printf("Model: %s\n", vehicles[i].model);
            printf("Maximum Distance on Full Tank: %.2f km\n", vehicles[i].maxDistance);
            printf("Speed: %.2f km/h\n", vehicles[i].speed);

            if (vehicles[i].maxDistance >= tripDistance) {
                printf("This vehicle CAN complete the trip without refueling.\n");
            } else {
                totalFuelRequired = tripDistance / vehicles[i].fuelEfficiency;
                printf("This vehicle CANNOT complete the trip without refueling.\n");
                printf("Total Fuel Required for the Trip: %.2f liters\n", totalFuelRequired);
            }

            totalTime = tripDistance / vehicles[i].speed;
            printf("Total Time Required for the Trip: %.2f hours\n", totalTime);
            break;
        }
    }

    if (!found) {
        printf("\nVehicle Model Not Found!\n");
    }

    return 0;
}

#include <stdio.h>

struct ParkingLot {
    int floorID;  
    int totalSpots;  
    int occupiedSpots;  
    char status[10][10]; 
};

int main() {
    int i, j;
    int floors, spots;
    int floorNum, spotNum;

    printf("Enter the number of floors: ");
    scanf("%d", &floors);
    printf("Enter the number of spots per floor: ");
    scanf("%d", &spots);

    struct ParkingLot lot[floors]; 

    for (i = 0; i < floors; i++) {
        lot[i].floorID = i + 1;
        lot[i].totalSpots = spots;
        lot[i].occupiedSpots = 0;

        printf("\nEnter parking status for Floor %d (E for empty, O for occupied):\n", lot[i].floorID);
        for (j = 0; j < spots; j++) {
            printf("Floor %d, Spot %d: ", lot[i].floorID, j + 1);
            scanf(" %c", &lot[i].status[i][j]);  

            if (lot[i].status[i][j] == 'O') {
                lot[i].occupiedSpots++;
            }
        }
    }

    printf("\nCurrent Parking Lot Status:\n");
    for (i = 0; i < floors; i++) {
        printf("Floor %d: Occupied Spots: %d / %d\n", lot[i].floorID, lot[i].occupiedSpots, lot[i].totalSpots);
        printf("Parking Layout: ");
        for (j = 0; j < spots; j++) {
            printf("%c ", lot[i].status[i][j]);
        }
        printf("\n");
    }

    printf("\nEnter floor number to park on: ");
    scanf("%d", &floorNum);
    printf("Enter spot number to park in: ");
    scanf("%d", &spotNum);

    if (floorNum < 1 || floorNum > floors || spotNum < 1 || spotNum > spots) {
        printf("\nInvalid floor or spot number. Please enter a valid location.\n");
    } else {
        if (lot[floorNum - 1].status[floorNum - 1][spotNum - 1] == 'E') {
            printf("\nSpot is available! Parking the vehicle...\n");
            lot[floorNum - 1].status[floorNum - 1][spotNum - 1] = 'O'; 
            lot[floorNum - 1].occupiedSpots++;
        } else {
            printf("\nSorry, this spot is already occupied.\n");
        }
    }

    printf("\nUpdated Parking Lot Status:\n");
    for (i = 0; i < floors; i++) {
        printf("Floor %d: Occupied Spots: %d / %d\n", lot[i].floorID, lot[i].occupiedSpots, lot[i].totalSpots);
        printf("Parking Layout: ");
        for (j = 0; j < spots; j++) {
            printf("%c ", lot[i].status[i][j]);
        }
        printf("\n");
    }

    return 0;
}