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Lernen Anwendungen von Integer-Typen | Numerische Datentypen
C++ Datentypen

bookAnwendungen von Integer-Typen

We found out that assigning a value exceeding the -2,147,483,648 to 2,147,483,647 range would not raise any error. Instead it will cause an overflow.

Note
Note

Overflow occurs when a calculation produces a result that is too large to be represented by the data type used.

For example, if you try to store a value larger than the maximum representable value for an integer type, an overflow will occur, and the result will wrap around or be truncated, leading to unexpected behavior in your program.

It can lead to critical bugs in your programs, so that's something to keep in mind. We will learn how to handle numbers that are too large in the next chapter.

Aufgabe

Swipe to start coding

Imagine you are building an analytics tool for social media platforms. Each platform reports the number of views as an int. Sometimes, the sum of views from two platforms exceeds the storage limit of int. Your task is to safely calculate the total number of views.

The function sumViews takes two int numbers representing views from two platforms.

  1. Convert the int values to long to safely handle large numbers.
    • Create a variable platform1Long of type long and assign it the value of platform1.
    • Create a variable platform2Long of type long and assign it the value of platform2.
  2. Add platform1Long and platform2Long and store the result in a variable totalViews of type long.
  3. Return the value of totalViews from the sumViews function.

Lösung

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Abschnitt 2. Kapitel 2
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bookAnwendungen von Integer-Typen

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We found out that assigning a value exceeding the -2,147,483,648 to 2,147,483,647 range would not raise any error. Instead it will cause an overflow.

Note
Note

Overflow occurs when a calculation produces a result that is too large to be represented by the data type used.

For example, if you try to store a value larger than the maximum representable value for an integer type, an overflow will occur, and the result will wrap around or be truncated, leading to unexpected behavior in your program.

It can lead to critical bugs in your programs, so that's something to keep in mind. We will learn how to handle numbers that are too large in the next chapter.

Aufgabe

Swipe to start coding

Imagine you are building an analytics tool for social media platforms. Each platform reports the number of views as an int. Sometimes, the sum of views from two platforms exceeds the storage limit of int. Your task is to safely calculate the total number of views.

The function sumViews takes two int numbers representing views from two platforms.

  1. Convert the int values to long to safely handle large numbers.
    • Create a variable platform1Long of type long and assign it the value of platform1.
    • Create a variable platform2Long of type long and assign it the value of platform2.
  2. Add platform1Long and platform2Long and store the result in a variable totalViews of type long.
  3. Return the value of totalViews from the sumViews function.

Lösung

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War alles klar?

Wie können wir es verbessern?

Danke für Ihr Feedback!

Abschnitt 2. Kapitel 2
single

single

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