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c++ Programming Glossary: printfWhat do the following phrases mean in C++: zero-, default- and value-initialization? http://stackoverflow.com/questions/1613341/what-do-the-following-phrases-mean-in-c-zero-default-and-value-initializat
http://stackoverflow.com/questions/162941/why-use-pointers a Hello You can reach any element in the array like this printf Second char is c a 1 Index 1 since the array starts with element.. array starts with element 0. Or you could equally do this printf Second char is c a 1 The pointer operator the is needed since.. 1 The pointer operator the is needed since we are telling printf that we want to print a character. Without the the character..
What is the name of this operator: “-->”? http://stackoverflow.com/questions/1642028/what-is-the-name-of-this-operator #include stdio.h int main int x 10 while x 0 x goes to 0 printf d x I'd assume this is C since it works in GCC as well. Where..
strange output in comparison of float with float literal http://stackoverflow.com/questions/1839422/strange-output-in-comparison-of-float-with-float-literal of float with float literal float f 0.7 if f 0.7 printf equal else printf not equal Why is the output not equal Why.. with float literal float f 0.7 if f 0.7 printf equal else printf not equal Why is the output not equal Why does this happen ..
How do you reverse a string in place in C or C++? http://stackoverflow.com/questions/198199/how-do-you-reverse-a-string-in-place-in-c-or-c p q p p ^ q q p ^ q p p ^ q int main int argc char argv do printf s argv argc 1 strrev argv argc 1 printf s n argv argc 1 while.. argc char argv do printf s argv argc 1 strrev argv argc 1 printf s n argv argc 1 while argc return 0 This is XOR swap thing... bytes. SWP q 0 q 1 q break int main int argc char argv do printf s argv argc 1 strrev_utf8 argv argc 1 printf s n argv argc 1..
C++ Timer function to provide time in nano seconds http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds clock diff std clock start double CLOCKS_PER_SEC cout printf diff ' n' return 0 The above code gives the time in seconds..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points demonstrably precede the modification. Example 1 std printf d d i i invokes Undefined Behaviour because of Rule no 2 Example..
How can I get a list of files in a directory using C or C++? http://stackoverflow.com/questions/612097/how-can-i-get-a-list-of-files-in-a-directory-using-c-or-c directories within directory while ent readdir dir NULL printf s n ent d_name closedir dir else could not open directory perror..
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 #include highgui.h int main int argc char argv if argc 2 printf Usage . opencv_hello file.png n return 1 IplImage img cvLoadImage..
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 backtrace array 10 print out all the frames to stderr fprintf stderr Error signal d n sig backtrace_symbols_fd array size.. exit 1 void baz int foo int 1 make a bad pointer printf d n foo causes segfault void bar baz void foo bar int main int..
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