Challenge: 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.
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.
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.
- Convert the
intvalues tolongto safely handle large numbers.- Create a variable
platform1Longof typelongand assign it the value ofplatform1. - Create a variable
platform2Longof typelongand assign it the value ofplatform2.
- Create a variable
- Add
platform1Longandplatform2Longand store the result in a variabletotalViewsof typelong. - Return the value of
totalViewsfrom thesumViewsfunction.
Solución
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Can you explain what causes integer overflow in more detail?
What are some real-world examples of bugs caused by integer overflow?
How can I prevent or detect integer overflow in my programs?
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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.
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.
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.
- Convert the
intvalues tolongto safely handle large numbers.- Create a variable
platform1Longof typelongand assign it the value ofplatform1. - Create a variable
platform2Longof typelongand assign it the value ofplatform2.
- Create a variable
- Add
platform1Longandplatform2Longand store the result in a variabletotalViewsof typelong. - Return the value of
totalViewsfrom thesumViewsfunction.
Solución
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