¡@
c++ Programming Glossary: outputIs there a difference in C++ between copy initialization and direct initialization? http://stackoverflow.com/questions/1051379/is-there-a-difference-in-c-between-copy-initialization-and-direct-initializati sequence. I tried hard and got the following code to output different text for each of those forms without using the obvious.. B std cout copy return B int main A a B b1 a 1 B b2 a 2 output direct copy How does it work and why does it output that result.. b2 a 2 output direct copy How does it work and why does it output that result Direct initialization It first doesn't know anything..
What is an undefined reference/unresolved external symbol error and how do I fix it? http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix defined in the current translation. All such translator output is collected into a program image which contains information..
strange output in comparison of float with float literal http://stackoverflow.com/questions/1839422/strange-output-in-comparison-of-float-with-float-literal output in comparison of float with float literal float f 0.7 if f.. 0.7 if f 0.7 printf equal else printf not equal Why is the output not equal Why does this happen c c floating point double precision..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c cout n Instead of copying the extracted tokens to an output stream one could insert them into a container using the same..
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior But wait I can compile this no problem and get the output yellow or What do you mean undefined string literals are stored..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses element in the input sequence and stores the result to the output sequence std transform in.begin in.end out.begin add_x 1 assert..
http://stackoverflow.com/questions/4421706/operator-overloading from the standard library and while most of the stream output and input operators defined by the standard library are indeed.. as members of the stream classes when you implement output and input operations for your own types you cannot change the.. operators. However except for overloading and for output and input there are very few reasonable use cases for overloading..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers tuple a4 std endl Further ideas for improvements Implement output for std tuple ... in the same way is we have it for std pair.. preprocessor macros Recent updates I removed the custom output iterator in favour of a simple for loop in the print function... that operator is now correctly in std . Notes Removing the output iterator means that there is no way to use std copy to get pretty..
How to convert a number to string and vice versa in C++ http://stackoverflow.com/questions/5290089/how-to-convert-a-number-to-string-and-vice-versa-in-c string int main int number 1234 std ostringstream ostr output string stream ostr number use the string stream just like cout..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope the code is just running with no runtime exceptions The output was 5 8 How can it be Isn't the memory of a local variable inaccessible..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes Compiling with g rdynamic gets you symbol info in your output which glibc can use to make a nice stacktrace gcc g rdynamic.. g rdynamic . test.c o test Executing this gets you this output . test Error signal 11 . test handler 0x19 0x400911 lib64 tls..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line int x iFile x cerr x endl return 0 input.txt 10 20 30 Output 10 20 30 30 Note I've skipped all error checking code to keep..
Size of character ('a') in C/C++ http://stackoverflow.com/questions/2172943/size-of-character-a-in-c-c d n sizeof a printf Size of char d n sizeof 'a' return 0 Output Size of char 1 Size of char 4 In C #include iostream int main.. sizeof a n std cout Size of char sizeof 'a' n return 0 Output Size of char 1 Size of char 1 So my question is why the sizeof..
Output unicode strings in Windows console app http://stackoverflow.com/questions/2492077/output-unicode-strings-in-windows-console-app unicode strings in Windows console app Hi I was trying to output.. font in c console app and this snippet works. SetConsoleOutputCP CP_UTF8 wchar_t s L èéø ǽл Σæ a int bufferSize WideCharToMultiByte.. iostreams. Any suggestions This does not work SetConsoleOutputCP CP_UTF8 utf8_locale locale old_locale new boost program_options..
http://stackoverflow.com/questions/4421706/operator-overloading Common operators to overload Assignment Operator Input and Output Operators Function call operator Comparison operators Arithmetic.. X X operator X rhs swap rhs return this Input and Output Operators The stream operators among the most commonly overloaded..
C++ : Catch a divide by zero error http://stackoverflow.com/questions/4747934/c-catch-a-divide-by-zero-error a here endl int main signal SIGFPE handler int a 1 0 Output Signal 8 here And right after executing the signal handler the..
Create WCF service for unmanaged C++ clients http://stackoverflow.com/questions/686452/create-wcf-service-for-unmanaged-c-clients menu option. Under the General settings change the Output Directory to .. bin Debug. Under the C C General settings add.. menu option. Under the General settings change the Output Directory to .. bin Debug and change the Common Language Runtime..
C++, __try and try/catch/finally http://stackoverflow.com/questions/7049502/c-try-and-try-catch-finally GetExceptionInformation std cout caught std endl return 0 Output Filtering c0000005 destructed caught Filtering e06d7363 destructed..
http://stackoverflow.com/questions/720077/calculating-size-of-an-array arr x n arr printf sizeof arr d n G_N_ELEMENTS arr foo arr Output arr bffffa40 sizeof arr 4 arr bffffa40 sizeof arr 1 c c share..
Why does integer overflow on x86 with GCC cause an infinite loop? http://stackoverflow.com/questions/7682477/why-does-integer-overflow-on-x86-with-gcc-cause-an-infinite-loop I miss I compiled this using ~ Desktop g main.cpp O2 GCC Output ~ Desktop . a.out 536870912 1073741824 2147483648 0 0 0 ..... compiles this and gives the following result Correct Output ~ Desktop g main.cpp ~ Desktop . a.out 536870912 1073741824..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle threads iterations test_dp_mac_SSE 8 10000000 system pause Output 1 thread 10000000 iterations Compiled with Visual Studio 2010.. GHz 17.6 GFlops . This code achieves 17.3 GFlops not bad. Output 8 threads 10000000 iterations Compiled with Visual Studio 2010.. threads iterations test_dp_mac_AVX 8 10000000 system pause Output 1 thread 10000000 iterations Compiled with Visual Studio 2010..
What is “rvalue reference for *this”? http://stackoverflow.com/questions/8610571/what-is-rvalue-reference-for-this rvalue object n int main test t t.f lvalue test .f rvalue Output clang std c 0x stdlib libc Wall pedantic t.cpp . a.out lvalue..
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection http://stackoverflow.com/questions/8667818/opencv-c-obj-c-detecting-a-sheet-of-paper-square-detection skew reduction like that and further processing p Input Output Original image click Code double angle cv Point pt1 cv Point..
Why does changing 0.1f to 0 slow down performance by 10x? http://stackoverflow.com/questions/9314534/why-does-changing-0-1f-to-0-slow-down-performance-by-10x omp_get_wtime cout end start endl system pause return 0 Output #define FLOATING 1.78814e 007 1.3411e 007 1.04308e 007 0 7.45058e..
|