promotions

#include "stdio.h" int main() { int x = -13701; unsigned int y = 3; signed short z = x / y; printf("z = %d\n", z); return 0; } I would expect the answer to be -4567. I am getting "z = 17278". Why does a promotion of these numbers result in 17278? I executed this in Code Pad . The hidden type conversions are: signed short z = (signed short) (((unsigned int) x) / y); When you mix signed and unsigned types the unsigned ones win. x is converted to unsigned int , divided by 3, and then that result is down-converted to (signed) short . With 32-bit integers: (unsigned) -13701 == (unsigned) 0xFFFFCA7B

I am trying to create a sweepstakes application. I am trying to copy wildfire . But I am unable to create facebook applications dynamically like they are doing. I checked it they are using graph api to show on front end but there is no method available in graph api to create applications dynamically. Can anyone please guide me how wildfire is doing dynamic app creation. Is there any alternative available? Mike Knoop In general, they are likely not creating new applications for each client. Unless you can show us evidence of this, it is the same application being installed many times onto their

Please let me know what is the best way to determine composition of young generation memory promoted to old generation, after each young GC event? Ideally I would like to know class names which are responsible say, for 80% of heap in each "young gen -> old gen" promotion chunk; Example: I have 600M young gen, each tenure promotes 6M; I want to know which objects compose this 6M. Thank you. JT. There is no easy way to do this, however, I have recently been analyzing memory performance of large java apps, and can share some experience. Here is how I found what objects are being promoted to old

As it states from oracle Reference from Oracle Docs Widening Primitive Conversion 19 specific conversions on primitive types are called the widening primitive conversions: byte to short, int, long, float, or double short to int, long, float, or double char to int, long, float, or double int to long, float, or double long to float or double ? float to double If a float has 32 bits and a long has 64 how is that considered widening? Shouldn't this be considered narrowing? The range of values that can be represented by a float or double is much larger than the range that can be represented by a

Apple doesn't offer promotional codes for in-app purchases. What's the best way to let users try the features or content unlocked by in-app purchases for free, while complying with Apple's Developer Guidelines? The idea is to allow a special set of users (reviewers, key fans, etc.) to access the content or features offered as in-app purchases without paying. Examples of apps that worked around this limitation would be much appreciated. Eric Schweichler You could submit a version of your application that has all features unlocked by default. Submitted apps have a publish date that you can set

Aside from %hn and %hhn (where the h or hh specifies the size of the pointed-to object), what is the point of the h and hh modifiers for printf format specifiers? Due to default promotions which are required by the standard to be applied for variadic functions, it is impossible to pass arguments of type char or short (or any signed/unsigned variants thereof) to printf . According to 7.19.6.1(7), the h modifier: Specifies that a following d, i, o, u, x, or X conversion specifier applies to a short int or unsigned short int argument (the argument will have been promoted according to the integer