Hi,
how can I round double in Visual C++ ?
In Dev-Cpp works:
#include <math.h>
int myInt;
myInt = int (round(45.65445));
, but in Visual C++:
#include <cmath>
int myInt;
myInt = int (round(45.65445));
gives -> error C2065: 'round' : undeclared identifier
round was introduced by C99, which MSVC doesn't implement. However, you can achieve the same result (for positive numbers):
For something that will work with negatives, try this post.Code:myInt = int (45.65445 + 0.5);
Last edited by anonytmouse; 12-09-2005 at 10:55 PM.
AFAIK, round() is not a standard function. floor() and ceil(), which are in the standard C library and declared in <math.h>, can probably be used in combination to achieve what you want. In C++, and alternative would be based on std::floor() and std::ceil() in <cmath>.
okidoki
