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Leer Challenge: Applications of Integer Types | Numerical Data Types
C++ Data Types

bookChallenge: Applications of Integer Types

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.

Remember

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.

Taak

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.

Example

platform1 = 1502365230, platform2 = 1262530350 => 2764895580
platform1 = 500000000, platform2 = 600000000 => 1100000000
platform1 = 0, platform2 = 123456789 => 123456789

Oplossing

solution.cpp

solution.cpp

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bookChallenge: Applications of Integer Types

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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.

Remember

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.

Taak

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.

Example

platform1 = 1502365230, platform2 = 1262530350 => 2764895580
platform1 = 500000000, platform2 = 600000000 => 1100000000
platform1 = 0, platform2 = 123456789 => 123456789

Oplossing

solution.cpp

solution.cpp

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Was alles duidelijk?

Hoe kunnen we het verbeteren?

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