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C++ Data Types
course content

Kursusindhold

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
Division int and double

We will not stop on most operations since they work as expected. Instead, let's look at the reasons behind the incorrect result obtained from the division operation. Those are explained in a video below:

It's not just a problem limited to division. When you use operators such as +, -, *, or / on variables of certain types, the resulting value will have the same type as the operands.

It's important to be mindful of these possibilities and take them into account.

Opgave

Swipe to start coding

  1. Calculate and output how many meters in a given number of kilometers (2455).
  2. Make sure the output number is float and not integer.

Note

In order to get the correct result, we only need to add . to any of the numbers in division (9/4. or 9./4 or 9./4.).

Løsning

cpp

solution

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
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Sektion 1. Kapitel 3
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book
Division int and double

We will not stop on most operations since they work as expected. Instead, let's look at the reasons behind the incorrect result obtained from the division operation. Those are explained in a video below:

It's not just a problem limited to division. When you use operators such as +, -, *, or / on variables of certain types, the resulting value will have the same type as the operands.

It's important to be mindful of these possibilities and take them into account.

Opgave

Swipe to start coding

  1. Calculate and output how many meters in a given number of kilometers (2455).
  2. Make sure the output number is float and not integer.

Note

In order to get the correct result, we only need to add . to any of the numbers in division (9/4. or 9./4 or 9./4.).

Løsning

cpp

solution

Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
Var alt klart?

Hvordan kan vi forbedre det?

Tak for dine kommentarer!

Sektion 1. Kapitel 3
Switch to desktopSkift til skrivebord for at øve i den virkelige verdenFortsæt der, hvor du er, med en af nedenstående muligheder
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