Challenge: Unsigned Data Types
To represent a number in the binary system, it is necessary to store both its value and sign. One bit is dedicated to storing the sign, while the remaining bits are used to store the numerical value. The sign bit stores:
0
if the number is non-negative;1
if the number is negative.
If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned
type modifier. This modifier enables the storage of values without considering the sign.
Moreover, due to the increased memory available for storing the value, the range of possible values is wider; however, negative numbers are not included within this range. Therefore, the allowed ranges are as follows:
main.cpp
12345678910#include <iostream> int main() { unsigned int total_vehicles = 1446000000; unsigned short age = 21; std::cout << total_vehicles << std::endl; std::cout << age << std::endl; }
Note
Additionally, there is a
signed
type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default aresigned
, so there is no need to specify it explicitly.
Be sure to use unsigned
only when the variable can not take negative numbers.
Assigning a negative value to an unsigned variable will not produce any errors, but the resulting value will be incorrect.
Swipe to start coding
You are managing a warehouse inventory system. Each warehouse has a maximum capacity, and you want to make sure that adding new stock does not exceed this limit.
The function addStock
takes three unsigned int
parameters and returns the updated warehouse stock without exceeding the maximum capacity. All values are unsigned
since negative items are not possible.
- First, check if the sum of
stock
andnewStock
exceedsmaxCapacity
. - If the sum is greater than
maxCapacity
, returnmaxCapacity
to avoid exceeding the limit. - If the sum is less than or equal to
maxCapacity
, return the sum ofstock
andnewStock
.
Example
addStock(950, 30, 1000)
→ 980
addStock(950, 100, 1000)
→ 1000
addStock(950, 0, 1000)
→ 950
Рішення
solution.cpp
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single
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Can you explain why assigning a negative value to an unsigned variable gives an incorrect result?
What are some common use cases for unsigned types?
How do I choose between signed and unsigned types in my programs?
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Challenge: Unsigned Data Types
Свайпніть щоб показати меню
To represent a number in the binary system, it is necessary to store both its value and sign. One bit is dedicated to storing the sign, while the remaining bits are used to store the numerical value. The sign bit stores:
0
if the number is non-negative;1
if the number is negative.
If we are certain that our variable can only hold non-negative numbers, we can utilize the unsigned
type modifier. This modifier enables the storage of values without considering the sign.
Moreover, due to the increased memory available for storing the value, the range of possible values is wider; however, negative numbers are not included within this range. Therefore, the allowed ranges are as follows:
main.cpp
12345678910#include <iostream> int main() { unsigned int total_vehicles = 1446000000; unsigned short age = 21; std::cout << total_vehicles << std::endl; std::cout << age << std::endl; }
Note
Additionally, there is a
signed
type modifier available to indicate that a data type can accommodate both positive and negative numbers. But all numerical data types by default aresigned
, so there is no need to specify it explicitly.
Be sure to use unsigned
only when the variable can not take negative numbers.
Assigning a negative value to an unsigned variable will not produce any errors, but the resulting value will be incorrect.
Swipe to start coding
You are managing a warehouse inventory system. Each warehouse has a maximum capacity, and you want to make sure that adding new stock does not exceed this limit.
The function addStock
takes three unsigned int
parameters and returns the updated warehouse stock without exceeding the maximum capacity. All values are unsigned
since negative items are not possible.
- First, check if the sum of
stock
andnewStock
exceedsmaxCapacity
. - If the sum is greater than
maxCapacity
, returnmaxCapacity
to avoid exceeding the limit. - If the sum is less than or equal to
maxCapacity
, return the sum ofstock
andnewStock
.
Example
addStock(950, 30, 1000)
→ 980
addStock(950, 100, 1000)
→ 1000
addStock(950, 0, 1000)
→ 950
Рішення
solution.cpp
Дякуємо за ваш відгук!
single