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Can I add a library into another? say, add libex1.a into libex2.a, then each time I just need to link to libex2.a. Anyone knows? Thanks!

I think that's because in the getarraysize function, sizeof(input) will give you the size of a pointer, which is 8, and sizeof(input[0]) is the size of a char, which is 1.

I tried to call cblas_dgemm from C++ code to do matrix multiplication. But with same matrices, the C++ code is much slower than matlab command C=A*B. Anybody know why? I thought matlab also uses...

I think so. I did
./execname
gprof execname


It achieved a normal exit.


Yes, I saw the gmon.out. I can see other all the information, like how many times a function is called, just the...

I want to use gprof to optimize my program. But in its output, time is not counted for any function. All the entries for time are 0.0 . My program runs for 50s. My operating system is Mac OSX. I used...

For C++ programmers, if a function needs to return a value to indicate MULTIPLE status, such like success and different situations of failure(more than one, so can't return bool), what value should...

OK, thank you very much!

Thank you! Is there any easy way to add all the sub folders of a folder to the searching path? Because it seems that the source code in that library doesn't follow the normal convention.

I think it should be
void StudentType::printData(ostream& out) const

How can I add a folder and ALL ITS SUBFOLDERS to the "include searching path"? Then if myheader.h is in one of these folders, I can use "include <myheader.h>" instead of "include "path/myheader.h" "....