Press Enter to Continue
or, better:
c++
Convert Python program to C/C++ code?
Yes. Look at Cython. It does just that: Converts Python to C for speedups.
C++ identifier is undefined
Reducing to three lines (the other errors are analogous): While wall is defined, gallons is not. And where do you want to get gallons from anyway? The result is hidden deep inside another function. How do you want to get it out from there? Well, you need a return value: This way, you can use your function like this: Analogously for … Read more
How do I clear a C++ array?
Assuming array is a normal array (e.g. int[])
Thread pooling in C++11
This is copied from my answer to another very similar post: Start with maximum number of threads the system can support:int num_threads = std::thread::hardware_concurrency(); For an efficient threadpool implementation, once threads are created according to num_threads, it’s better not to create new ones, or destroy old ones (by joining). There will be a performance penalty, an … Read more
MinGW: “gcc is not recognized as an internal or external command”
Although an old question, none of the answers here helped me. The only route I found to get to my destination is by typing in the following line in my command prompt: To copy: set Path=C:\MinGW\bin;%PATH% After that, simply type in gcc -v. Hope this helps anyone with the problem I had!
Understanding “corrupted size vs. prev_size” glibc error
OK, so I’ve managed to overcome this issue. First of all – A practical cause to “corrupted size vs. prev_size” is quite simple – memory chunk control structure fields in the adjacent following chunk are being overwritten due to out-of-bounds access by the code. if you allocate x bytes for pointer p but wind up writing beyond x in regards to … Read more
The #include exists, but I get an error: identifier “cout” is undefined. Why?
You need to specify the std:: namespace: Alternatively, you can use a using directive: I should add that you should avoid these using directives in headers, since code including these will also have the symbols brought into the global namespace. Restrict using directives to small scopes, for example Here, the using directive only applies to the scope of foo().
How to read groups of integers from a file, line by line in C++
It depends on whether you want to do it in a line by line basis or as a full set. For the whole file into a vector of integers: If you want to deal in a line per line basis:
Fatal error: iostream: No such file or directory in compiling C program using GCC
Neither <iostream> nor <iostream.h> are standard C header files. Your code is meant to be C++, where <iostream> is a valid header. Use a C++ compiler such as clang++ or g++ (and a .cpp file extension) for C++ code. Alternatively, this program uses mostly constructs that are available in C anyway. It’s easy enough to convert the entire program to compile using a C compiler. Simply remove #include … Read more