Зміст курсу

C++ Data Types

1. Introduction

Overview Arithmetic Operations Division int and double Math in C++Specifying a Type

2. Numerical Data Types

Integers Using Integers Type modifier Float Double Numerical Data Types Summary

3. Text Data Type

Char String Indexing a String Working With String Changing The String Practice Finding Text in a String Strings in Memory

4. Other Data Types and Concepts

Boolean Boolean Expressions Void Auto Unsigned Implicit Type Conversion Explicit Type Conversion

String

Typically, rather than dealing with individual characters, we want to work with complete words, sentences, and texts, which are composed of a sequence of characters.

One way to do that is to use an array of char's like this:

main


              1234567
            
#include <iostream>

int main()
{
    char word[10] = {'C', 'o', 'd', 'e', 'f', 'i', 'n', 'i', 't', 'y'};  
    std::cout << word << std::endl;
}

You can see that initialization is quite tricky. Additionally, to add something to this text, you will need to redefine the array with more allocated memory. Fortunately, in C++, there is a string class that makes this process much easier.

So you can assign to a string any text within double quotes " ". Also, adding more text to a string is as easy as using the .append() method. Here is an example:

main


              12345678910
            
#include <iostream>

int main()
{
    std::string word = "Codefinity";
    std::cout << word << std::endl;
    
    word.append(".com");  
    std::cout << word << std::endl;
}

Besides .append(), there are many other methods of a string to allow you efficiently operate with text data. Here is the table with some. They will be discussed in more detail in later chapters.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Все було зрозуміло?

Секція 3. Розділ 2

String

Typically, rather than dealing with individual characters, we want to work with complete words, sentences, and texts, which are composed of a sequence of characters.

One way to do that is to use an array of char's like this:

main


              1234567
            
#include <iostream>

int main()
{
    char word[10] = {'C', 'o', 'd', 'e', 'f', 'i', 'n', 'i', 't', 'y'};  
    std::cout << word << std::endl;
}

So you can assign to a string any text within double quotes " ". Also, adding more text to a string is as easy as using the .append() method. Here is an example:

main


              12345678910
            
#include <iostream>

int main()
{
    std::string word = "Codefinity";
    std::cout << word << std::endl;
    
    word.append(".com");  
    std::cout << word << std::endl;
}

Besides .append(), there are many other methods of a string to allow you efficiently operate with text data. Here is the table with some. They will be discussed in more detail in later chapters.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Все було зрозуміло?

Секція 3. Розділ 2

String

Typically, rather than dealing with individual characters, we want to work with complete words, sentences, and texts, which are composed of a sequence of characters.

One way to do that is to use an array of char's like this:

main


              1234567
            
#include <iostream>

int main()
{
    char word[10] = {'C', 'o', 'd', 'e', 'f', 'i', 'n', 'i', 't', 'y'};  
    std::cout << word << std::endl;
}

So you can assign to a string any text within double quotes " ". Also, adding more text to a string is as easy as using the .append() method. Here is an example:

main


              12345678910
            
#include <iostream>

int main()
{
    std::string word = "Codefinity";
    std::cout << word << std::endl;
    
    word.append(".com");  
    std::cout << word << std::endl;
}

Besides .append(), there are many other methods of a string to allow you efficiently operate with text data. Here is the table with some. They will be discussed in more detail in later chapters.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Все було зрозуміло?

Typically, rather than dealing with individual characters, we want to work with complete words, sentences, and texts, which are composed of a sequence of characters.

One way to do that is to use an array of char's like this:

main


              1234567
            
#include <iostream>

int main()
{
    char word[10] = {'C', 'o', 'd', 'e', 'f', 'i', 'n', 'i', 't', 'y'};  
    std::cout << word << std::endl;
}

So you can assign to a string any text within double quotes " ". Also, adding more text to a string is as easy as using the .append() method. Here is an example:

main


              12345678910
            
#include <iostream>

int main()
{
    std::string word = "Codefinity";
    std::cout << word << std::endl;
    
    word.append(".com");  
    std::cout << word << std::endl;
}

Besides .append(), there are many other methods of a string to allow you efficiently operate with text data. Here is the table with some. They will be discussed in more detail in later chapters.

Завдання

Create a string variable and store the name 'Alex' in it.
Output its value to the console.

Секція 3. Розділ 2

Перейдіть на комп'ютер для реальної практикиПродовжуйте з того місця, де ви зупинились, використовуючи один з наведених нижче варіантів