What is the whole number?

Integer Overflow concerns a phenomenon that occurs in certain types of computers where their characters move from positive to negative or vice versa when they reach the end of their respective scope. They have integer data types of circular ranges in computer ranges and when they reach one end of their extent, they immediately move to the other end of their range. This is also called integer overflows.

signed integer may have a values ​​range from -2

31 to (2

31

) - 1. Rather, another number on which it increases is at the other end of its range: (2

31

- 1). The change from the negative to the positive at the end of its scope is an example of overflowing the whole number. The same reason cannot be a whole number to be 2 31 ; Instead, this value would switch to the other end of its range and became -2 31 .

This overflow has significant consequences in programming. FieldIt can only have in what the integer type allows in it, and negative indices are not counted. If the programmer attempts to create a field larger than allows the whole type, significant memory errors may occur, as overflowing the entire number would result in a negative index. This is particularly dangerous in languages ​​that do not have explicit field control boundaries such as C ++.

When the whole number overflows, related overflow types such as buffer overflow, heap overflow and overflow of the tank buffer may occur. In all these cases, the entire overflow concerns the impression of memory structures with more data than these structures may have. These overflows, in simple programs, often do not make much more than to cause an invalid reading error or invalid write. However, handling this problem hackers can engineering errors that can causeMore serious problems.

In most simple programs, Intprese Eger is not the main problem. The limits of the integer type are large enough so that the problem of overflowing does not get into the game unless there are a lot of data. In some cases, overflow overflows can be alleviated, as in the case of counters additions, using a larger data type with a larger range. In theory, a larger data type could eventually encounter the same overflow problem, but as data ranges increase, the chances of decreasing. The range of each integer data type is at least twice as large as the smallest, so there is enough space for additional data.