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

Unsigned

To represent a number in the binary system, it is necessary to store both its value and sign. One bit is dedicated to storing the sign, while the remaining bits are used to store the numerical value. The sign bit stores:

0 if the number is non-negative;
1 if the number is negative.

If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned type modifier. This modifier enables the storage of values without considering the sign.

Moreover, due to the increased memory available for storing the value, the range of possible values is wider; however, negative numbers are not included within this range. Therefore, the allowed ranges are as follows:

main


              12345678910
            
#include <iostream>

int main()
{
	unsigned int total_vehicles = 1446000000;
	unsigned short age = 21;
  
	std::cout << total_vehicles << std::endl;
	std::cout << age << std::endl;
}

Note
Additionally, there is a signed type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default are signed, so there is no need to specify it explicitly.

Be sure to use unsigned only when the variable can not take negative numbers.
Assigning a negative value to an unsigned variable will not produce any errors, but the resulting value will be incorrect. Your task is to check this statement yourself!

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Все було зрозуміло?

Секція 4. Розділ 5

Unsigned

0 if the number is non-negative;
1 if the number is negative.

If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned type modifier. This modifier enables the storage of values without considering the sign.

main


              12345678910
            
#include <iostream>

int main()
{
	unsigned int total_vehicles = 1446000000;
	unsigned short age = 21;
  
	std::cout << total_vehicles << std::endl;
	std::cout << age << std::endl;
}

Note
Additionally, there is a signed type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default are signed, so there is no need to specify it explicitly.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Все було зрозуміло?

Секція 4. Розділ 5

Unsigned

0 if the number is non-negative;
1 if the number is negative.

If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned type modifier. This modifier enables the storage of values without considering the sign.

main


              12345678910
            
#include <iostream>

int main()
{
	unsigned int total_vehicles = 1446000000;
	unsigned short age = 21;
  
	std::cout << total_vehicles << std::endl;
	std::cout << age << std::endl;
}

Note
Additionally, there is a signed type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default are signed, so there is no need to specify it explicitly.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Все було зрозуміло?

0 if the number is non-negative;
1 if the number is negative.

If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned type modifier. This modifier enables the storage of values without considering the sign.

main


              12345678910
            
#include <iostream>

int main()
{
	unsigned int total_vehicles = 1446000000;
	unsigned short age = 21;
  
	std::cout << total_vehicles << std::endl;
	std::cout << age << std::endl;
}

Note
Additionally, there is a signed type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default are signed, so there is no need to specify it explicitly.

Завдання

Assign the value -10 to the variable of any data type with an unsigned modifier.
Print this variable using the std::cout.

Секція 4. Розділ 5

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