El tamaño en memoria de cada uno de esos tipos es diferente. float ocupa 32 bits mientras que double ocupa 64 bits. Esto afecta a la cantidad de números diferentes que "caben" en cada uno de estos formatos. En double se pueden almacenar números más grandes y también más decimales. Con los números que has probado no se ve diferencia porque cout << redondea la representación interna para ...
I've read about the difference between double precision and single precision. However, in most cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affec...
Possible Duplicate: long double vs double I am unable to understand the difference between between long double and double in C and C++. Can anyone help?
Your variant is as correct as it ever gets. %lf is the correct format specifier for double. But it became so in C99. Before that one had to use %f.
In my earlier question I was printing a double using cout that got rounded when I wasn't expecting it. How can I make cout print a double using full precision?
How do I print a double value with full precision using cout?
16 Double is more precise but is coded on 8 bytes. float is only 4 bytes, so less room and less precision. You should be very careful if you have double and float in your application. I had a bug due to that in the past. One part of the code was using float while the rest of the code was using double.
Possible Duplicate: Java : different double and Double in comparison In a sample java program for one of my labs, I have two different methods taking Double and double parameters respectively. ...