Scenario-Based Coding Questions on 1D Arrays in C++

#include <iostream>
using namespace std;

int main() {
    double ratings[5], sum = 0;
    
    for (int i = 0; i < 5; i++) {
        printf("Enter rating of movie %d (out of 10): ", i + 1);
        cin >> ratings[i];
        sum += ratings[i];
    }
    
    double average = sum / 5;
    printf("Average movie rating: %.2f\n", average);
    
    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int numbers[5];
    
    cout << "Enter 5 numbers: \n";
    for (int i = 0; i < 5; i++) {
        cin >> numbers[i];
    }
    
    cout << "Numbers in reverse order: ";
    for (int i = 4; i >= 0; i--) {
        cout << numbers[i] << " ";
    }
    cout << "\n";
    
    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int transactions[6], even_count = 0, odd_count = 0;
    
    cout << "Enter 6 transaction amounts: \n";
    for (int i = 0; i < 6; i++) {
        cin >> transactions[i];
        if (transactions[i] % 2 == 0) {
            even_count++;
        } else {
            odd_count++;
        }
    }
    
    cout << "Even transactions: " << even_count << "\n";
    cout << "Odd transactions: " << odd_count << "\n";
    
    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "Enter the number of participants: ";
    cin >> n;
    cin.ignore(); 

    string names[n];

    cout << "Enter the names of " << n << " participants:\n";
    for (int i = 0; i < n; i++) {
        getline(cin, names[i]);
    }

    string longestName = names[0], shortestName = names[0];
    int maxLength = 0, minLength = 0;

    for (int j = 0; names[0][j] != '\0'; j++) {
        maxLength++;
        minLength++;
    }

    for (int i = 1; i < n; i++) {
        int count = 0;
        
        for (int j = 0; names[i][j] != '\0'; j++) {
            count++;
        }

        if (count > maxLength) {
            maxLength = count;
            longestName = names[i];
        }
        if (count < minLength) {
            minLength = count;
            shortestName = names[i];
        }
    }

    cout << "Longest Name: " << longestName << "\n";
    cout << "Shortest Name: " << shortestName << "\n";

    return 0;
}

#include <iostream>
#include <string>
using namespace std;

int main() {
    string snacks[5];
    
    for (int i = 0; i < 5; i++) {
        printf("Enter favorite snack %d: ", i + 1);
        cin>>snacks[i];
    }

    for (int i = 0; i < 4; i++) {
        for (int j = i + 1; j < 5; j++) {
            int k = 0;
            while (k < snacks[i].length() && k < snacks[j].length() && snacks[i][k] == snacks[j][k]) {
                k++;
            }
            if (k < snacks[i].length() && k < snacks[j].length() && snacks[i][k] > snacks[j][k]) {
                string temp = snacks[i];
                snacks[i] = snacks[j];
                snacks[j] = temp;
            }
        }
    }
    
    cout << "Snacks in alphabetical order: \n";
    for (int i = 0; i < 5; i++) {
        cout << snacks[i] << "\n";
    }
    
    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "Enter the number of items: ";
    cin >> n;

    double prices[n], total = 0;
    
    for (int i = 0; i < n; i++) {
        cout<<"Enter price of item "<<i+1<<": ";
        cin >> prices[i];
        total += prices[i];
    }

    double discount = 0;
    if (total > 100) {
        discount = total * 0.10;
    }

    cout << "\nOriginal Bill: $" << total;
    cout << "\nDiscount: $" << discount;
    cout << "\nFinal Payable Amount: $" << total - discount << endl;

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    double workout[7], total = 0, maxHours = 0;
    int maxDay = 0;

    cout << "Enter workout hours for each day (7 days):\n";
    for (int i = 0; i < 7; i++) {
        cout<<"Enter workout hours for day "<<i+1<<": ";
        cin >> workout[i];
        total += workout[i];

        if (workout[i] > maxHours) {
            maxHours = workout[i];
            maxDay = i + 1;
        }
    }

    cout << "\nTotal workout hours: " << total;
    cout << "\nMost active day: Day " << maxDay << " with " << maxHours << " hours";

    if (total >= 10) {
        cout << "\nGoal Achieved! Well done!\n";
    } else {
        cout << "\nGoal Not Achieved! Keep pushing!\n";
    }

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    const int DAYS = 10;
    int prices[DAYS];

    cout << "Enter stock prices for 10 days: ";
    for (int i = 0; i < DAYS; i++) {
        cin >> prices[i];
    }

    int maxProfit = 0, buyDay = 0, sellDay = 0;

    for (int i = 0; i < DAYS; i++) {  
        for (int j = i + 1; j < DAYS; j++) {  
            int profit = prices[j] - prices[i];
            if (profit > maxProfit) {
                maxProfit = profit;
                buyDay = i;
                sellDay = j;
            }
        }
    }

    if (maxProfit > 0) {
        cout << "Best day to buy: Day " << (buyDay + 1) << " at price " << prices[buyDay] << endl;
        cout << "Best day to sell: Day " << (sellDay + 1) << " at price " << prices[sellDay] << endl;
        cout << "Maximum Profit: " << maxProfit << endl;
    } else {
        cout << "No profit can be made.\n";
    }

    return 0;
}

#include <iostream>

using namespace std;

int main() {
    const int DAYS = 15;  
    int calls[DAYS];  
    int threshold;  

    for (int i = 0; i < DAYS; i++) {
        printf("Enter the number of calls handled on day %d: ", i + 1);
        cin >> calls[i];
    }

    printf("Enter the call threshold: ");
    cin >> threshold;

    int maxLength = 0, maxStart = -1;  
    int currentLength = 0, currentStart = 0;  

    for (int i = 0; i < DAYS; i++) {
        if (calls[i] > threshold) {  
            if (currentLength == 0) {  
                currentStart = i;  
            }
            currentLength++;  
        } else {  
            if (currentLength > maxLength) {  
                maxLength = currentLength;
                maxStart = currentStart;
            }
            currentLength = 0;  
        }
    }

    if (currentLength > maxLength) {
        maxLength = currentLength;
        maxStart = currentStart;
    }

    if (maxLength > 0) {
        printf("Longest productive streak: %d days (Day %d to Day %d)\n", maxLength, maxStart + 1, maxStart + maxLength);
    } else {
        printf("No productive streak found above the threshold.\n");
    }

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int n; 
    cout << "Enter the number of artifacts: ";
    cin >> n;

    int artifacts[n];
    for (int i = 0; i < n; i++) {
        printf("Enter value for artifact %d: ", i + 1);
        cin >> artifacts[i];
    }

    int carryLimit; 
    cout << "Enter the number of artifacts you can carry: ";
    cin >> carryLimit;

    for (int i = 0; i < n - 1; i++) {
        for (int j = i + 1; j < n; j++) {
            if (artifacts[j] > artifacts[i]) {
                int temp = artifacts[i];
                artifacts[i] = artifacts[j];
                artifacts[j] = temp;
            }
        }
    }

    int totalValue = 0;
    cout << "Selected artifacts: ";
    for (int i = 0; i < carryLimit; i++) {
        cout << artifacts[i] << " ";
        totalValue += artifacts[i];
    }
    cout << endl;

    cout << "Total value of selected artifacts: " << totalValue << endl;

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int N;
    cout << "Enter the number of data values: ";
    cin >> N;

    int data[N + 1];
    int sum = 0;

    cout << "Enter " << N << " data values: ";
    for (int i = 0; i < N; i++) {
        cin >> data[i];
        sum += data[i]; 
    }

    data[N] = (sum % 2 == 0) ? 0 : 1;

    cout << "Transmitted Packet (with parity check value): ";
    for (int i = 0; i <= N; i++) {
        cout << data[i] << " ";
    }
    cout << endl;

    char choice;
    cout << "Do you want to modify a received value to simulate an error? (y/n): ";
    cin >> choice;

    if (choice == 'y' || choice == 'Y') {
        int index, newValue;
        cout << "Enter the index (0 to " << N - 1 << ") of the value to change: ";
        cin >> index;

        if (index >= 0 && index < N) {
            cout << "Enter new value: ";
            cin >> newValue;
            data[index] = newValue;
        } else {
            cout << "Invalid index. No modification was made.\n";
        }
    }

    sum = 0;
    for (int i = 0; i <= N; i++) {
        sum += data[i];
    }

    if (sum % 2 == 0) {
        cout << "Transmission Successful: Data is valid.\n";
    } else {
        cout << "Transmission Corrupted: Error detected!\n";
    }

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int n;
    cout << "Enter the number of warehouses: ";
    cin >> n;

    int currentInventory[n], targetInventory[n], difference[n];

    cout << "Enter the current inventory for each warehouse:\n";
    for (int i = 0; i < n; i++)
        cin >> currentInventory[i];

    cout << "Enter the target inventory for each warehouse:\n";
    for (int i = 0; i < n; i++)
        cin >> targetInventory[i];

    int totalCurrent = 0, totalTarget = 0;
    for (int i = 0; i < n; i++) {
        difference[i] = targetInventory[i] - currentInventory[i];
        totalCurrent += currentInventory[i];
        totalTarget += targetInventory[i];
    }

    if (totalCurrent < totalTarget) {
        cout << "Insufficient inventory! Additional " << (totalTarget - totalCurrent) << " units are required.\n";
        return 0;
    }
    
    if (totalCurrent > totalTarget) {
        cout << "Excess inventory! " << (totalCurrent - totalTarget) << " units must be discarded.\n";
        return 0;
    }

    int i = 0, j = 0, transfers = 0;

    while (i < n && j < n) {
        while (i < n && difference[i] <= 0) i++;
        while (j < n && difference[j] >= 0) j++;

        if (i < n && j < n) {
            int moveUnits = min(difference[i], -difference[j]);
            cout << "Move " << moveUnits << " units from Warehouse " << j + 1 << " to Warehouse " << i + 1 << ".\n";
            difference[i] -= moveUnits;
            difference[j] += moveUnits;
            transfers++;
        }
    }

    cout << "Total transfers required: " << transfers << endl;
    return 0;
}

#include <iostream>

using namespace std;

int main() {
    int N;
    cout << "Enter the number of runners: ";
    cin >> N;

    int times[N], validTimes[N], validCount = 0, sum = 0;

    cout << "Enter " << N << " race completion times: ";
    for (int i = 0; i < N; i++) {
        cin >> times[i];
        sum += times[i]; 
    }

    double avgTime = sum / (double)N;  

    for (int i = 0; i < N; i++) {
        if (times[i] <= 2 * avgTime) {
            validTimes[validCount++] = times[i]; 
        }
    }

    for (int i = 0; i < validCount - 1; i++) {
        for (int j = 0; j < validCount - i - 1; j++) {
            if (validTimes[j] > validTimes[j + 1]) {
                int temp = validTimes[j];
                validTimes[j] = validTimes[j + 1];
                validTimes[j + 1] = temp;
            }
        }
    }

    double median;
    if (validCount % 2 == 1) {
        median = validTimes[validCount / 2];  
    } else {
        median = (validTimes[validCount / 2 - 1] + validTimes[validCount / 2]) / 2.0; 
    }

    for (int i = 0; i < N; i++) {
        if (times[i] > 2 * avgTime) {
            times[i] = median;
        }
    }

    for (int i = 0; i < N - 1; i++) {
        for (int j = 0; j < N - i - 1; j++) {
            if (times[j] > times[j + 1]) {
                int temp = times[j];
                times[j] = times[j + 1];
                times[j + 1] = temp;
            }
        }
    }

    cout << "Final corrected race times: ";
    for (int i = 0; i < N; i++) {
        cout << times[i] << " ";
    }
    cout << endl;

    return 0;
}

#include <iostream>
using namespace std;

int main() {
    int dragonHealth, numWarriors;
    float dragonDefense;

    cout << "Enter the dragon's initial health: ";
    cin >> dragonHealth;
    cout << "Enter the dragon's defense percentage (0-100): ";
    cin >> dragonDefense;

    cout << "Enter the number of warriors: ";
    cin >> numWarriors;

    int attackPower[numWarriors]; 
    int warriorHealth[numWarriors];
    int totalDamage = 0;

    for (int i = 0; i < numWarriors; i++) {
        warriorHealth[i] = 100;
    }

    for (int i = 0; i < numWarriors; i++) {
        printf("Enter attack power of warrior %d: ", i + 1);
        cin >> attackPower[i];
        int effectiveDamage = attackPower[i] - (attackPower[i] * dragonDefense / 100);
        totalDamage += effectiveDamage; 
    }

    dragonHealth -= totalDamage;

    if (dragonHealth <= 0) {
        cout << "The warriors have defeated the dragon!" << endl;
        cout << "Total effective damage dealt: " << totalDamage << endl;
    } else {
        cout << "The dragon survives with " << dragonHealth << " health left!" << endl;
        cout << "The warriors must retreat!" << endl;

        int retaliationDamage = dragonHealth / 10; 
        cout << "The dragon counterattacks and deals " << retaliationDamage << " damage to the warriors!" << endl;

        int warriorsDead = 0;
        for (int i = 0; i < numWarriors; i++) {
            if (retaliationDamage >= warriorHealth[i]) {
                warriorsDead++;
                retaliationDamage -= warriorHealth[i]; 
            } else {
                warriorHealth[i] -= retaliationDamage; 
                break;
            }
        }

        cout << warriorsDead << " warriors have died in the dragon's counterattack." << endl;
    }

    return 0;
}

#include <iostream>

using namespace std;

int main() {
    const int MAX_UPGRADES = 5;
    string upgrades[MAX_UPGRADES] = {"Engine Tuning", "Turbocharging", "Weight Reduction", "Aerodynamics", "Tire Upgrade"};
    int costs[MAX_UPGRADES] = {500, 700, 400, 300, 350};
    bool applied[MAX_UPGRADES] = {false};

    int totalCost = 0;
    int choice;

    while (true) {
        cout << "\nCar Modification Menu:\n";
        cout << "1. Apply an Upgrade\n";
        cout << "2. Remove an Upgrade\n";
        cout << "3. View Applied Upgrades\n";
        cout << "4. Reset to Factory Settings\n";
        cout << "5. View Total Cost\n";
        cout << "6. Exit\n";
        cout << "Enter your choice: ";
        cin >> choice;

        if (choice == 1) {
            cout << "\nAvailable Upgrades:\n";
            for (int i = 0; i < MAX_UPGRADES; i++) {
                if (!applied[i]) {
                    cout << i + 1 << ". " << upgrades[i] << " ($" << costs[i] << ")\n";
                }
            }
            cout << "Enter the number of the upgrade to apply: ";
            int upgradeChoice;
            cin >> upgradeChoice;

            if (upgradeChoice >= 1 && upgradeChoice <= MAX_UPGRADES && !applied[upgradeChoice - 1]) {
                applied[upgradeChoice - 1] = true;
                totalCost += costs[upgradeChoice - 1];
                cout << upgrades[upgradeChoice - 1] << " has been applied.\n";
            } else {
                cout << "Invalid choice or upgrade already applied.\n";
            }
        } 
        else if (choice == 2) {
            cout << "\nApplied Upgrades:\n";
            bool hasUpgrade = false;
            for (int i = 0; i < MAX_UPGRADES; i++) {
                if (applied[i]) {
                    cout << i + 1 << ". " << upgrades[i] << " ($" << costs[i] << ")\n";
                    hasUpgrade = true;
                }
            }

            if (!hasUpgrade) {
                cout << "No upgrades applied.\n";
                continue;
            }

            cout << "Enter the number of the upgrade to remove: ";
            int removeChoice;
            cin >> removeChoice;

            if (removeChoice >= 1 && removeChoice <= MAX_UPGRADES && applied[removeChoice - 1]) {
                applied[removeChoice - 1] = false;
                totalCost -= costs[removeChoice - 1];
                cout << upgrades[removeChoice - 1] << " has been removed.\n";
            } else {
                cout << "Invalid choice or upgrade not applied.\n";
            }
        } 
        else if (choice == 3) {
            cout << "\nCurrent Applied Upgrades:\n";
            bool hasUpgrade = false;
            for (int i = 0; i < MAX_UPGRADES; i++) {
                if (applied[i]) {
                    cout << "- " << upgrades[i] << "\n";
                    hasUpgrade = true;
                }
            }
            if (!hasUpgrade) {
                cout << "No upgrades applied.\n";
            }
        } 
        else if (choice == 4) {
            for (int i = 0; i < MAX_UPGRADES; i++) {
                applied[i] = false;
            }
            totalCost = 0;
            cout << "Car has been reset to factory settings.\n";
        } 
        else if (choice == 5) {
            cout << "Total cost of applied upgrades: $" << totalCost << "\n";
        } 
        else if (choice == 6) {
            cout << "Exiting program. Thank you for using the Car Modification System!\n";
            break;
        } 
        else {
            cout << "Invalid choice. Please enter a valid option.\n";
        }
    }
    return 0;
}