Scenario-Based Coding Questions on 1D Arrays in C

#include <stdio.h>
int main() {
    int marks[10], qualifiedCount = 0;

    printf("Enter the marks of 10 students:\n");
    for (int i = 0; i < 10; i++) {
        printf("Student %d: ", i + 1);
        scanf("%d", &marks[i]);
        if (marks[i] >= 50) {
            qualifiedCount++;
        }
    }

    printf("\nTotal number of students who qualified for graduation: %d\n", qualifiedCount);
    return 0;
}

#include <stdio.h>

int main() {
    int length;
    char username[100], ch;
    int i = 0;

    printf("Enter the length of your username: ");
    scanf("%d", &length);

    printf("Enter your username, one character at a time:\n");
    while (i < length) {
        scanf(" %c", &ch);
        username[i] = ch;
        i++;
    }

    username[i] = '\0'; 

    printf("Your username is: ");
    for (int j = 0; j < length; j++) {
        printf("%c", username[j]);
    }
    printf("\n");

    return 0;
}

#include <stdio.h>

int main() {
    float temperatures[7];
    float sum = 0, highest, lowest, average;

    printf("Enter the temperatures for 7 days:\n");
    for (int i = 0; i < 7; i++) {
        printf("Day %d: ", i + 1);
        scanf("%f", &temperatures[i]);
    }

    highest = lowest = temperatures[0]; 
    for (int i = 0; i < 7; i++) { 
        sum += temperatures[i];
        if (temperatures[i] > highest) {
            highest = temperatures[i];
        }
        if (temperatures[i] < lowest) {
            lowest = temperatures[i];
        }
    }

    average = sum / 7;

    printf("Highest temperature: %.2f\n", highest);
    printf("Lowest temperature: %.2f\n", lowest);
    printf("Average temperature: %.2f\n", average);

    return 0;
}

#include <stdio.h>

int main() {
    int numCodes;

    printf("Enter the number of treasure codes: ");
    scanf("%d", &numCodes);

    int clueCodes[numCodes];

    printf("Enter the treasure codes one by one:\n");
    for (int i = 0; i < numCodes; i++) {
        printf("Code %d: ", i + 1);
        scanf("%d", &clueCodes[i]);
    }

    int isValid = 1; 
    for (int i = 1; i < numCodes; i++) {
        if (clueCodes[i] <= clueCodes[i - 1]) {
            isValid = 0; 
            break;
        }
    }

    if (isValid == 1) {
        printf("\nThe treasure codes are valid. Here's the sequence:\n");
        for (int i = 0; i < numCodes; i++) {
            printf("Code %d: %d\n", i + 1, clueCodes[i]);
        }
    } else {
        printf("\nError: The treasure codes are not in strictly increasing order.\n");
    }

    return 0;
}

#include <stdio.h>

int main() {
    int pin[8];
    int isValid = 1;

    printf("Enter the 8 digits of the PIN:\n");
    for (int i = 0; i < 8; i++) {
        scanf("%d", &pin[i]);
    }

    for (int i = 0; i < 8; i++) {
        for (int j = i + 1; j < 8; j++) {
            if (pin[i] == pin[j]) {
                isValid = 0;
                break;
            }
        }
        if (isValid == 0) {
            break;
        }
    }

    if (isValid == 1) {
        printf("Valid PIN.\n");
    } else {
        printf("Invalid PIN: Digits must be unique.\n");
    }

    return 0;
}

#include <stdio.h>

int main() {
    int seats[10] = {0}; 
    int seatNumber, choice;

    printf("Welcome to Cinema Seat Booking System (10 seats available).\n");

    do {
        printf("Enter seat number to book (1-10): ");
        scanf("%d", &seatNumber);

        if(seatNumber < 1 || seatNumber > 10) {
            printf("Invalid seat number! Please enter between 1 and 10.\n");
        } else if(seats[seatNumber - 1] == 1) {
            printf("Sorry! Seat %d is already booked.\n", seatNumber);
        } else {
            seats[seatNumber - 1] = 1; 
            printf("Seat %d successfully booked!\n", seatNumber);
        }

        printf("Do you want to book another seat? (1-Yes / 0-No): ");
        scanf("%d", &choice);

    } while(choice == 1);

    printf("Thank you for using the Cinema Booking System!\n");

    return 0;
}

#include <stdio.h>

int main() {
    int n;

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

    int lights[n];

    printf("Enter the initial states (0 for OFF, 1 for ON):\n");
    for(int i = 0; i < n; i++) {
        scanf("%d", &lights[i]);
    }

    for(int i = 0; i < n; i++) {
        lights[i] = 1 - lights[i]; 
    }

    printf("Updated light sequence:\n");
    for(int i = 0; i < n; i++) {
        printf("%d ", lights[i]);
    }
    printf("\n");

    return 0;
}

#include <stdio.h>

int main() {
    int N;

    printf("Enter the total sequence size: ");
    scanf("%d", &N);

    int numbers[N-1], sum_actual = 0;

    int sum_expected = (N * (N + 1)) / 2;

    printf("Enter %d numbers (one number missing):\n", N-1);
    for(int i = 0; i < N-1; i++) {
        scanf("%d", &numbers[i]);
        sum_actual += numbers[i];
    }

    int missing = sum_expected - sum_actual;

    printf("The missing number is: %d\n", missing);

    return 0;
}

#include <stdio.h>

int main() {
    int n;
    
    printf("Enter the length of your password: ");
    scanf("%d", &n);

    if(n < 8) {
        printf("Password is too short! Must be at least 8 characters.\n");
        return 0;
    }

    char password[n+1];
    int hasUpper = 0, hasLower = 0, hasDigit = 0, hasSpecial = 0;
    char specialChars[] = "@#$%&*!?"; 

    printf("Enter your password character by character:\n");
    for(int i = 0; i < n; i++) {
        scanf(" %c", &password[i]);  

        if(password[i] >= 'A' && password[i] <= 'Z')
            hasUpper = 1;
        else if(password[i] >= 'a' && password[i] <= 'z')
            hasLower = 1;
        else if(password[i] >= '0' && password[i] <= '9')
            hasDigit = 1;
        else {
           
            for(int j = 0; j < 8; j++) {
                if(password[i] == specialChars[j]) {
                    hasSpecial = 1;
                    break;
                }
            }
        }
    }

    password[n] = '\0';

    if(hasUpper==1 && hasLower==1 && hasDigit==1 && hasSpecial==1)
        printf("Password is Strong.\n");
    else
        printf("Password is Weak.\n");

    return 0;
}

#include <stdio.h>

int main() {
    int n;

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

    int tracking[n], found[n];

    printf("Enter the tracking numbers:\n");
    for(int i = 0; i < n; i++) {
        scanf("%d", &tracking[i]);
        found[i] = 0; 
    }

    int hasDuplicate = 0;

    printf("Duplicate Tracking Numbers:\n");

    for(int i = 0; i < n; i++) {
        for(int j = i + 1; j < n; j++) {
            if(tracking[i] == tracking[j] && found[j] == 0) {
                printf("%d\n", tracking[i]);
                found[j] = 1; 
                hasDuplicate = 1;
            }
        }
    }

    if(hasDuplicate == 0) {
        printf("No duplicate tracking numbers found.\n");
    }

    return 0;
}

#include <stdio.h>

int main() {
    int n;

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

    int steps[n], position = 0;

    printf("Enter the encoded map sequence:\n");
    for(int i = 0; i < n; i++) {
        scanf("%d", &steps[i]);
    }

    for(int i = 0; i < n; i++) {
        if(i % 2 == 0) {
            position += steps[i];  
        }
        else { 
            position -= steps[i];
        }  
    }

    printf("The treasure is located at position: %d\n", position);

    return 0;
}

#include <stdio.h>

int main() {
    int n;

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

    int floors[n];

    printf("Enter the floor visit log:\n");
    for(int i = 0; i < n; i++) {
        scanf("%d", &floors[i]);
    }

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

    int uniqueCount = 1, maxFloor = floors[0], maxCount = 1, currentCount = 1;

    for(int i = 1; i < n; i++) {
        if(floors[i] != floors[i - 1]) {
            uniqueCount++; 
            currentCount = 1;
        } else {
            currentCount++; 
        }

        if(currentCount > maxCount) {
            maxCount = currentCount;
            maxFloor = floors[i];
        }
    }

    printf("Total unique floors visited: %d\n", uniqueCount);
    printf("Most frequently visited floor: %d (visited %d times)\n", maxFloor, maxCount);

    return 0;
}

#include <stdio.h>

int main() {
    int n;

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

    int data[n], sumPrimes = 0;

    printf("Enter the transmission data:\n");
    for (int i = 0; i < n; i++) {
        scanf("%d", &data[i]);
        int isPrime = 1;
        if (data[i] < 2) {
            isPrime = 0;
        } else {
            for (int j = 2; j <= data[i] / 2; j++) {
                if (data[i] % j == 0) {
                    isPrime = 0;
                    break;
                }
            }
        }

        if (isPrime) {
            sumPrimes += data[i];
        }
    }
    printf("Decoded Message Value: %d\n", sumPrimes);

    return 0;
}

#include <stdio.h>

int main() {
    int r;

    printf("Enter the number of relief centers: ");
    scanf("%d", &r);

    int initialFood[r], initialWater[r], initialMedicine[r], initialBlankets[r];
    int usedFood[r], usedWater[r], usedMedicine[r], usedBlankets[r];
    int remainingFood[r], remainingWater[r], remainingMedicine[r], remainingBlankets[r];

    printf("\nEnter initial supply for each relief center (Food, Water, Medicine, Blankets):\n");
    for (int i = 0; i < r; i++) {
        printf("Relief Center %d:\n", i + 1);
        printf("Food: ");
        scanf("%d", &initialFood[i]);
        printf("Water: ");
        scanf("%d", &initialWater[i]);
        printf("Medicine: ");
        scanf("%d", &initialMedicine[i]);
        printf("Blankets: ");
        scanf("%d", &initialBlankets[i]);
    }

    printf("\nEnter used supply for each relief center:\n");
    for (int i = 0; i < r; i++) {
        printf("Relief Center %d:\n", i + 1);
        printf("Used Food: ");
        scanf("%d", &usedFood[i]);
        printf("Used Water: ");
        scanf("%d", &usedWater[i]);
        printf("Used Medicine: ");
        scanf("%d", &usedMedicine[i]);
        printf("Used Blankets: ");
        scanf("%d", &usedBlankets[i]);
    }

    printf("\nRemaining supplies at each relief center:\n");
    for (int i = 0; i < r; i++) {
        remainingFood[i] = initialFood[i] - usedFood[i];
        remainingWater[i] = initialWater[i] - usedWater[i];
        remainingMedicine[i] = initialMedicine[i] - usedMedicine[i];
        remainingBlankets[i] = initialBlankets[i] - usedBlankets[i];

        printf("Relief Center %d:\n", i + 1);
        printf("Food: %d units remaining\n", remainingFood[i]);
        printf("Water: %d units remaining\n", remainingWater[i]);
        printf("Medicine: %d units remaining\n", remainingMedicine[i]);
        printf("Blankets: %d units remaining\n", remainingBlankets[i]);
    }

    printf("\nRelief Centers that need urgent resupply:\n");
    int needResupply = 0;
    for (int i = 0; i < r; i++) {
        if (remainingFood[i] < 20) {
            printf("Relief Center %d - Food (Only %d units left!)\n", i + 1, remainingFood[i]);
            needResupply = 1;
        }
        if (remainingWater[i] < 20) {
            printf("Relief Center %d - Water (Only %d units left!)\n", i + 1, remainingWater[i]);
            needResupply = 1;
        }
        if (remainingMedicine[i] < 20) {
            printf("Relief Center %d - Medicine (Only %d units left!)\n", i + 1, remainingMedicine[i]);
            needResupply = 1;
        }
        if (remainingBlankets[i] < 20) {
            printf("Relief Center %d - Blankets (Only %d units left!)\n", i + 1, remainingBlankets[i]);
            needResupply = 1;
        }
    }

    if (!needResupply) {
        printf("All relief centers have sufficient supplies.\n");
    }

    return 0;
}

#include <stdio.h>

int main() {
    int maxWarehouses;

    printf("Enter the maximum number of warehouses: ");
    scanf("%d", &maxWarehouses);

    int boxes[maxWarehouses], pallets[maxWarehouses], containers[maxWarehouses], crates[maxWarehouses];
    int warehouseCount = 0;

    int choice;
    do {
        printf("\n--- Warehouse Resource Management System ---\n");
        printf("1. Add a New Warehouse\n");
        printf("2. Update Resource Quantities\n");
        printf("3. Display All Warehouses\n");
        printf("4. Analyze the Most Stocked Resource Across All Warehouses\n");
        printf("5. Transfer Resources Between Warehouses\n");
        printf("6. Find the Warehouse with the Highest Stock\n");
        printf("7. Remove a Warehouse\n");
        printf("8. Exit\n");
        printf("Enter your choice: ");
        scanf("%d", &choice);

        if (choice == 1) { 
            if (warehouseCount >= maxWarehouses) {
                printf("Maximum number of warehouses reached. Cannot add more warehouses.\n");
            } else {
                printf("Enter the initial quantity of boxes: ");
                scanf("%d", &boxes[warehouseCount]);

                printf("Enter the initial quantity of pallets: ");
                scanf("%d", &pallets[warehouseCount]);

                printf("Enter the initial quantity of containers: ");
                scanf("%d", &containers[warehouseCount]);

                printf("Enter the initial quantity of crates: ");
                scanf("%d", &crates[warehouseCount]);

                warehouseCount++;
                printf("Warehouse added successfully!\n");
            }

        } else if (choice == 2) { 
            int warehouseID;
            printf("Enter the warehouse ID (1 to %d) to update: ", warehouseCount);
            scanf("%d", &warehouseID);
            warehouseID--;

            if (warehouseID >= 0 && warehouseID < warehouseCount) {
                printf("Enter the new quantity of boxes: ");
                scanf("%d", &boxes[warehouseID]);
                printf("Enter the new quantity of pallets: ");
                scanf("%d", &pallets[warehouseID]);
                printf("Enter the new quantity of containers: ");
                scanf("%d", &containers[warehouseID]);
                printf("Enter the new quantity of crates: ");
                scanf("%d", &crates[warehouseID]);
                printf("Resource quantities updated successfully!\n");
            } else {
                printf("Invalid warehouse ID.\n");
            }

        } else if (choice == 3) {
            if (warehouseCount == 0) {
                printf("No warehouses available.\n");
            } else {
                printf("\n--- Warehouse Details ---\n");
                for (int i = 0; i < warehouseCount; i++) {
                    printf("Warehouse %d:\n", i + 1);
                    printf("Boxes: %d\n", boxes[i]);
                    printf("Pallets: %d\n", pallets[i]);
                    printf("Containers: %d\n", containers[i]);
                    printf("Crates: %d\n\n", crates[i]);
                }
            }

        } else if (choice == 4) { 
            int totalBoxes = 0, totalPallets = 0, totalContainers = 0, totalCrates = 0;

            for (int i = 0; i < warehouseCount; i++) {
                totalBoxes += boxes[i];
                totalPallets += pallets[i];
                totalContainers += containers[i];
                totalCrates += crates[i];
            }

            int maxStock = totalBoxes;
            
            char resourceName[10] = {'B', 'o', 'x', 'e', 's', '\0'};

            if (totalPallets > maxStock) {
                maxStock = totalPallets;

                resourceName[0] = 'P';
                resourceName[1] = 'a';
                resourceName[2] = 'l';
                resourceName[3] = 'l';
                resourceName[4] = 'e';
                resourceName[5] = 't';
                resourceName[6] = 's';
                resourceName[7] = '\0';
            }
            
            if (totalContainers > maxStock) {
                maxStock = totalContainers;

                resourceName[0] = 'C';
                resourceName[1] = 'o';
                resourceName[2] = 'n';
                resourceName[3] = 't';
                resourceName[4] = 'a';
                resourceName[5] = 'i';
                resourceName[6] = 'n';
                resourceName[7] = 'e';
                resourceName[8] = 'r';
                resourceName[9] = 's';
                resourceName[10] = '\0';
            }
            
            if (totalCrates > maxStock) {
                maxStock = totalCrates;

                resourceName[0] = 'C';
                resourceName[1] = 'r';
                resourceName[2] = 'a';
                resourceName[3] = 't';
                resourceName[4] = 'e';
                resourceName[5] = 's';
                resourceName[6] = '\0';
            }


            printf("\n--- Resource Analysis ---\n");
            printf("Total Boxes: %d\n", totalBoxes);
            printf("Total Pallets: %d\n", totalPallets);
            printf("Total Containers: %d\n", totalContainers);
            printf("Total Crates: %d\n", totalCrates);
            printf("Most Stocked Resource: %s (%d units)\n", resourceName, maxStock);

        } else if (choice == 5) { 
            int sourceID, targetID, resourceType, quantity;

            printf("Enter the source warehouse ID (1 to %d): ", warehouseCount);
            scanf("%d", &sourceID);
            printf("Enter the target warehouse ID (1 to %d): ", warehouseCount);
            scanf("%d", &targetID);
            sourceID--;
            targetID--;

            if (sourceID >= 0 && sourceID < warehouseCount && targetID >= 0 && targetID < warehouseCount) {
                printf("Select resource type to transfer (0: Boxes, 1: Pallets, 2: Containers, 3: Crates): ");
                scanf("%d", &resourceType);
                printf("Enter the quantity to transfer: ");
                scanf("%d", &quantity);

                if (resourceType == 0 && boxes[sourceID] >= quantity) {
                    boxes[sourceID] -= quantity;
                    boxes[targetID] += quantity;
                } else if (resourceType == 1 && pallets[sourceID] >= quantity) {
                    pallets[sourceID] -= quantity;
                    pallets[targetID] += quantity;
                } else if (resourceType == 2 && containers[sourceID] >= quantity) {
                    containers[sourceID] -= quantity;
                    containers[targetID] += quantity;
                } else if (resourceType == 3 && crates[sourceID] >= quantity) {
                    crates[sourceID] -= quantity;
                    crates[targetID] += quantity;
                } else {
                    printf("Invalid transfer. Check resource type or available stock.\n");
                }
            } else {
                printf("Invalid warehouse ID(s).\n");
            }

        } else if (choice == 6) { 
            int resourceType;
            printf("Select resource type to find the warehouse with the highest stock (0: Boxes, 1: Pallets, 2: Containers, 3: Crates): ");
            scanf("%d", &resourceType);

            int maxStock = -1, maxIndex = -1;
            for (int i = 0; i < warehouseCount; i++) {
                int stock = 0;

                if (resourceType == 0) {
                    stock = boxes[i];
                } else if (resourceType == 1) {
                    stock = pallets[i];
                } else if (resourceType == 2) {
                    stock = containers[i];
                } else if (resourceType == 3) {
                    stock = crates[i];
                }

                if (stock > maxStock) {
                    maxStock = stock;
                    maxIndex = i;
                }
            }

            if (maxIndex != -1) {
                printf("Warehouse %d has the highest stock: %d units\n", maxIndex + 1, maxStock);
            } else {
                printf("Invalid resource type.\n");
            }

        } else if (choice == 7) { 
            int warehouseID;
            printf("Enter the warehouse ID (1 to %d) to remove: ", warehouseCount);
            scanf("%d", &warehouseID);
            warehouseID--;

            if (warehouseID >= 0 && warehouseID < warehouseCount) {
                for (int i = warehouseID; i < warehouseCount - 1; i++) {
                    boxes[i] = boxes[i + 1];
                    pallets[i] = pallets[i + 1];
                    containers[i] = containers[i + 1];
                    crates[i] = crates[i + 1];
                }
                warehouseCount--;
                printf("Warehouse removed successfully!\n");
            } else {
                printf("Invalid warehouse ID.\n");
            }

        } else if (choice == 8) {
            printf("Exiting the program. Goodbye!\n");
        } else {
            printf("Invalid choice. Please try again.\n");
        }
    } while (choice != 8);

    return 0;
}