Ramesh portfolio

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#define MAX_STOCKS 100

// Definition of a Stock structure
struct Stock {
    char symbol[10];
    double price;
    int quantity;
};

// Definition of a Portfolio structure
struct Portfolio {
    struct Stock stocks[MAX_STOCKS];
    int stockCount;
};

// Function to add a stock to the portfolio
void addStock(struct Portfolio *portfolio) {
    // Check if the portfolio has space for more stocks
    if (portfolio->stockCount < MAX_STOCKS) {
        struct Stock newStock;

        printf("Enter stock symbol: ");
        scanf("%s", newStock.symbol);

        printf("Enter stock price: ");
        scanf("%lf", &newStock.price);

        printf("Enter quantity: ");
        scanf("%d", &newStock.quantity);

        // Add the new stock to the portfolio and increment stock count
        portfolio->stocks[portfolio->stockCount++] = newStock;

        printf("Stock added successfully.\n");
    } else {
        printf("Portfolio is full. Cannot add more stocks.\n");
    }
}

// Function to display all stocks in the portfolio
void displayPortfolio(struct Portfolio *portfolio) {
    printf("Portfolio:\n");
    for (int i = 0; i < portfolio->stockCount; ++i) {
        printf("%s - Price: %.2f, Quantity: %d\n",
               portfolio->stocks[i].symbol,
               portfolio->stocks[i].price,
               portfolio->stocks[i].quantity);
    }
}

// Function to simulate market changes on the stock prices
void simulateMarketChanges(struct Portfolio *portfolio) {
    srand(time(NULL));

    for (int i = 0; i < portfolio->stockCount; ++i) {
        // Generate a random movement between -0.10 and 0.10
        double movement = (rand() % 21 - 10) / 100.0;
        portfolio->stocks[i].price *= (1 + movement);
    }

    printf("Market changes simulated.\n");
}

// Function to calculate the total value of the portfolio
double calculatePortfolioValue(struct Portfolio *portfolio) {
    double totalValue = 0.0;

    for (int i = 0; i < portfolio->stockCount; ++i) {
        totalValue += portfolio->stocks[i].price * portfolio->stocks[i].quantity;
    }

    return totalValue;
}

// Main function to interact with the portfolio
int main() {
    struct Portfolio myPortfolio = {0};
    int choice;

    // Menu loop
    do {
        printf("\n1. Add Stock\n");
        printf("2. Display Portfolio\n");
        printf("3. Simulate Market Changes\n");
        printf("4. Calculate Portfolio Value\n");
        printf("5. Exit\n");
        printf("Enter your choice: ");
        if (scanf("%d", &choice) != 1) {
            printf("Invalid input. Please enter a number.\n");
            while (getchar() != '\n'); // Clear input buffer
            continue;
        }

        // Switch case to handle the user's choice
        switch (choice) {
            case 1:
                addStock(&myPortfolio);
                break;
            case 2:
                displayPortfolio(&myPortfolio);
                break;
            case 3:
                simulateMarketChanges(&myPortfolio);
                break;
            case 4:
                // Output the total value of the portfolio
                printf("Portfolio Value: %.2f\n", calculatePortfolioValue(&myPortfolio));
                break;
            case 5:
                printf("Exiting...\n");
                break;
            default:
                printf("Invalid choice. Please try again.\n");
        }
    } while (choice != 5);

    return 0;
}