Hello, On Fri, Dec 11, 2015 at 06:10:01PM -0800, Robert Ramey wrote:
On 12/11/15 5:50 PM, Robert Ramey wrote: To belabor the point, consider this little program:
#include <iostream> #include <cstdint> using namespace std; int main(){ int8_t x = 100; int y = x * x; cout << y << endl; uint32_t z1 = 100; int8_t z2 = -100; auto y2 = z1 * z2; cout << y2 << endl; }
which prints out:
10000 4294957296
This is due to the application of the C++ type promotion rules. Is it any reason that C++ drives people crazy?
This is the typical behaviour of C++ programmers, which are always hypercritical about the language, in stark contrast to any other programming language. The only problem I see above is that the compiler should issue a warning for the auto-line. And any reasonable programmer should not write such code. Oliver