Earlier, we saw that when casting between number types it was possible to lose information, for example, when casting from a long variable to an int variable. If the value stored in a type is too big, it will overflow.
Add a new Console Application project named Ch03_CheckingForOverflow.
The checked statement tells .NET to throw an exception when an overflow happens instead of allowing to it happen silently.
We set the initial value of an int variable to its maximum value minus one. Then, we increment it several times, outputting its value each time. Note that once x gets above its maximum value, it overflows to its minimum value and continues incrementing from there.
Type the following code in the Main method and run the program:
int x = int.MaxValue - 1; WriteLine(x); x++; WriteLine(x); x++; WriteLine(x); x++; WriteLine(x);
Press Ctrl + F5 and view the output in the console:
2147483646 2147483647 -2147483648 -2147483647
Now let's get the compiler to...