Task model

Design the Task struct and vector.

Task model

In this 5-lesson project you will build a to-do list application. Each lesson adds one piece; the final lesson gives you a complete command-line application.

The first lesson designs the Task struct. A task will have two fields: title (the title text) and done (whether it is done). This struct is used in every lesson of the project, so a solid design matters. In C++, you use a struct to group related data under a single type.

struct and fields

A struct groups related data under a single type. It is declared with struct Task { ... };. Variables inside a struct are called fields.

Example: struct Task { std::string title; bool done; };. Here title is a text field and done is a boolean field. A new instance is created with Task t;; fields are accessed with the dot: t.title. This is similar to calling .size() on a vector.

Exercise Task struct and instance

Define struct Task with the fields std::string title; and bool done;. In main, create a Task, assign "Ekmek al" to title, and print title with std::cout.

Show example solution

#include <iostream>
#include <string>
#include <vector>

struct Task {
    std::string title;
    bool done;
};

int main() {
    Task t;
    t.title = "Ekmek al";
    t.done = false;
    std::cout << t.title << "\n";
    return 0;
}

Test yourself

What does the Task instance's title print?
```
struct Task { std::string title; bool done; };
Task t;
t.title = "Ekmek al";
std::cout << t.title;
```
- Empty
- null
- Task
- Ekmek al
Show answer

Ekmek al — After t.title = "Ekmek al", cout prints Ekmek al.

Task field

struct Task {
    std::string title;
    ____
};

Show answer

struct Task {
    std::string title;
    bool done;
};

Match each expression to its meaning

struct Task

Struct declaration
std::string title

Text field
bool done

Boolean field
Task t

Instance creation

Next lesson: Adding tasks

We Are Enhancing Your Experience

Cookie Preferences

Strictly Necessary Cookies

Analytical Cookies