how to write a code in c language to make smart planner

Sure, let's break down the steps to write a code for a smart planner:

1. Define the Requirements:

   • The planner should allow users to add, view, edit, and delete tasks.
   • Each task should have a title, description, due date, and priority.
   • The planner should store tasks in a way that they can be retrieved and modified.

2. Set Up the Environment:

   • Ensure you have a C compiler installed (like GCC).
   • Create a new file for your code, e.g., smart_planner.c.

3. Include Necessary Headers:

   • Include standard libraries for input/output and string manipulation.

4. Define Data Structures:

   • Create a structure to represent a task.

5. Implement Functions:

   • Write functions to add, view, edit, and delete tasks.
   • Write a function to display the menu and handle user input.

6. Main Function:

   • Implement the main function to initialize the planner and handle the main loop.

Here is a basic example to get you started:

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

#define MAX_TASKS 100
#define TITLE_LEN 50
#define DESC_LEN 100

typedef struct {
    char title[TITLE_LEN];
    char description[DESC_LEN];
    char dueDate[11]; // Format: YYYY-MM-DD
    int priority;
} Task;

Task tasks[MAX_TASKS];
int taskCount = 0;

void addTask() {
    if (taskCount >= MAX_TASKS) {
        printf("Task list is full!\n");
        return;
    }
    Task newTask;
    printf("Enter title: ");
    fgets(newTask.title, TITLE_LEN, stdin);
    newTask.title[strcspn(newTask.title, "\n")] = 0; // Remove newline character

    printf("Enter description: ");
    fgets(newTask.description, DESC_LEN, stdin);
    newTask.description[strcspn(newTask.description, "\n")] = 0;

    printf("Enter due date (YYYY-MM-DD): ");
    fgets(newTask.dueDate, 11, stdin);
    newTask.dueDate[strcspn(newTask.dueDate, "\n")] = 0;

    printf("Enter priority (1-5): ");
    scanf("%d", &newTask.priority);
    getchar(); // Consume newline character left by scanf

    tasks[taskCount++] = newTask;
    printf("Task added successfully!\n");
}

void viewTasks() {
    if (taskCount == 0) {
        printf("No tasks to display.\n");
        return;
    }
    for (int i = 0; i < taskCount; i++) {
        printf("Task %d:\n", i + 1);
        printf("Title: %s\n", tasks[i].title);
        printf("Description: %s\n", tasks[i].description);
        printf("Due Date: %s\n", tasks[i].dueDate);
        printf("Priority: %d\n", tasks[i].priority);
        printf("\n");
    }
}

void editTask() {
    int taskNumber;
    printf("Enter task number to edit: ");
    scanf("%d", &taskNumber);
    getchar(); // Consume newline character left by scanf

    if (taskNumber < 1 || taskNumber > taskCount) {
        printf("Invalid task number.\n");
        return;
    }

    Task *task = &tasks[taskNumber - 1];
    printf("Editing Task %d:\n", taskNumber);

    printf("Enter new title (leave blank to keep current): ");
    char newTitle[TITLE_LEN];
    fgets(newTitle, TITLE_LEN, stdin);
    if (newTitle[0] != '\n') {
        newTitle[strcspn(newTitle, "\n")] = 0;
        strcpy(task->title, newTitle);
    }

    printf("Enter new description (leave blank to keep current): ");
    char newDescription[DESC_LEN];
    fgets(newDescription, DESC_LEN, stdin);
    if (newDescription[0] != '\n') {
        newDescription[strcspn(newDescription, "\n")] = 0;
        strcpy(task->description, newDescription);
    }

    printf("Enter new due date (leave blank to keep current): ");
    char newDueDate[11];
    fgets(newDueDate, 11, stdin);
    if (newDueDate[0] != '\n') {
        newDueDate[strcspn(newDueDate, "\n")] = 0;
        strcpy(task->dueDate, newDueDate);
    }

    printf("Enter new priority (leave blank to keep current): ");
    char newPriority[3];
    fgets(newPriority, 3, stdin);
    if (newPriority[0] != '\n') {
        task->priority = atoi(newPriority);
    }

    printf("Task updated successfully!\n");
}

void deleteTask() {
    int taskNumber;
    printf("Enter task number to delete: ");
    scanf("%d", &taskNumber);
    getchar(); // Consume newline character left by scanf

    if (taskNumber < 1 || taskNumber > taskCount) {
        printf("Invalid task number.\n");
        return;
    }

    for (int i = taskNumber - 1; i < taskCount - 1; i++) {
        tasks[i] = tasks[i + 1];
    }
    taskCount--;
    printf("Task deleted successfully!\n");
}

void displayMenu() {
    printf("Smart Planner Menu:\n");
    printf("1. Add Task\n");
    printf("2. View Tasks\n");
    printf("3. Edit Task\n");
    printf("4. Delete Task\n");
    printf("5. Exit\n");
    printf("Enter your choice: ");
}

int main() {
    int choice;
    while (1) {
        displayMenu();
        scanf("%d", &choice);
        getchar(); // Consume newline character left by scanf

        switch (choice) {
            case 1:
                addTask();
                break;
            case 2:
                viewTasks();
                break;
            case 3:
                editTask();
                break;
            case 4:
                deleteTask();
                break;
            case 5:
                printf("Exiting...\n");
                exit(0);
            default:
                printf("Invalid choice. Please try again.\n");
        }
    }
    return 0;
}

This code provides a basic structure for a smart planner. You can expand it by adding more features, such as saving tasks to a file, sorting tasks by priority or due date, and improving the user interface.