Junior — Middle
Mis juhtub programmis, kui int-tüüpi muutuja jõuab oma maksimaalse väärtuseni ja toimub üleujutus jooksu ajal?
sobes.tech AI
Vastus AI-lt
In Go, the int type is a signed integer type, whose size depends on the architecture (usually 32 or 64 bits). If a variable of type int reaches its maximum value and an overflow occurs:
- The value "wraps around" (wrap around) and becomes the minimum possible negative number for that type.
- Overflow does not cause an error or exception during runtime.
For example, for a 32-bit int, the maximum value is 2,147,483,647. Increasing it by 1 makes the value -2,147,483,648.
Example:
package main
import "fmt"
func main() {
var x int32 = 2147483647 // max value for int32
fmt.Println(x) // 2147483647
x = x + 1
fmt.Println(x) // -2147483648 (overflow)
}
Therefore, when working with integers, it is important to consider the possibility of overflow and to use types with a larger range or perform additional checks.