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C++ Data Types
course content

Course Content

C++ Data Types

C++ Data Types

1. Introduction
OverviewArithmetic OperationsDivision int and doubleStandard MathSpecifying a Type
2. Numerical Data Types
Overview of Integer TypesApplications of Integer TypesType Modifiers for VariablesWorking with Floating-Point NumbersDouble-Precision Numbers
3. Text Data Type
Character Data TypeString Data TypeAccessing and Manipulating String ElementsCommon String MethodsString Manipulation PracticeSearching Within Strings
4. Other Data Types and Concepts
Boolean Data TypeBoolean ExpressionsVoid Data TypeAutomatic Type DeductionUnsigned Data TypesImplicit Type ConversionExplicit Type Conversion

book
Character Data Type

The char data type is used to store a single character, such as 'A' or 'w'. In the next chapter, we will delve into combining these characters into sequences to create words, sentences, and more. For now, let’s focus on using char for single-character storage.

cpp

main

copy

              
1234567

            
#include <iostream>

int main()
{
    char letter = 'G';  
    std::cout << letter << std::endl;
}

Note

char should be specified in single quotes. Even if the character you hold is a number, you should put it in single quotes, '9', not 9.

You can play with the code above to see what happens if you use double quotes or assign numbers without quotes.

The char data type and memory.

To be stored in memory, it is first converted to a number using ASCII table. The binary representation of that number is then stored in memory.
You can take a quick look at the ASCII table below (the first column is not valuable for us).

cpp

main

copy

              
12345678

            
#include <iostream>

int main()
{
    // Change the number to output different symbol
    char symbol = 100;
    std::cout << symbol;
}

Note

If you assign a number without single quotes to a char (for example, char letter = 76), the compiler assumes that you specified a character already converted to a number.

As you can see from the table, 76 corresponds to L, so the value of letter is 'L'.

question mark

Which of the following will produce the output L when printed to the console?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 3. ChapterΒ 1

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course content

Course Content

C++ Data Types

C++ Data Types

1. Introduction
OverviewArithmetic OperationsDivision int and doubleStandard MathSpecifying a Type
2. Numerical Data Types
Overview of Integer TypesApplications of Integer TypesType Modifiers for VariablesWorking with Floating-Point NumbersDouble-Precision Numbers
3. Text Data Type
Character Data TypeString Data TypeAccessing and Manipulating String ElementsCommon String MethodsString Manipulation PracticeSearching Within Strings
4. Other Data Types and Concepts
Boolean Data TypeBoolean ExpressionsVoid Data TypeAutomatic Type DeductionUnsigned Data TypesImplicit Type ConversionExplicit Type Conversion

book
Character Data Type

The char data type is used to store a single character, such as 'A' or 'w'. In the next chapter, we will delve into combining these characters into sequences to create words, sentences, and more. For now, let’s focus on using char for single-character storage.

cpp

main

copy

              
1234567

            
#include <iostream>

int main()
{
    char letter = 'G';  
    std::cout << letter << std::endl;
}

Note

char should be specified in single quotes. Even if the character you hold is a number, you should put it in single quotes, '9', not 9.

You can play with the code above to see what happens if you use double quotes or assign numbers without quotes.

The char data type and memory.

To be stored in memory, it is first converted to a number using ASCII table. The binary representation of that number is then stored in memory.
You can take a quick look at the ASCII table below (the first column is not valuable for us).

cpp

main

copy

              
12345678

            
#include <iostream>

int main()
{
    // Change the number to output different symbol
    char symbol = 100;
    std::cout << symbol;
}

Note

If you assign a number without single quotes to a char (for example, char letter = 76), the compiler assumes that you specified a character already converted to a number.

As you can see from the table, 76 corresponds to L, so the value of letter is 'L'.

question mark

Which of the following will produce the output L when printed to the console?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 3. ChapterΒ 1
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