int i = 0;
// convert from a string
int i = int.Parse(“1″);
// convert froma string and don’t throw exceptions
if (int.TryParse(“1″, out i)) {}
i++; // increment by one
i–; // decrement by one
i += 10; // add 10
i -= 10; // subtract 10
i *= 10; // multiply by 10
i /= 10; // divide by 10
i = checked(i*2) // check for over flow
i = unchecked(i*2) // ignore over flow
