include

问题 I'm trying to learn C++ and I'm using MS Visual Studio 2019. I have the code below: #include <iostream> int main() { std::cout << pow(10, 2); } How is it possible to compile and run without error without including cmath ? Inside the solution there is only one file with the above code. 回答1: How is possible in C++ to use pow without include cmath library By including another header that includes the <math.h> header. There is no guarantee that standard library headers won't include other headers

问题 This error has only appeared for me since updating Xcode (and to MacOS Mojave 10.14). Something similar happened with #include <Python> , which I fixed by instead using #include "python2.7/Python.h". There is a similar error discussed in Clang doesn't see basic headers. When I try clang++ -stdlib=libc++ PyTrans.cpp -o -v I get ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) . The full error: warning: include path

问题 First I do know about 'import'. When I try 'import' it doesn't work. What I'm trying to do is split a single module into two parts, one of which is editable by a group and the other of which is not. I want the group to write well-defined 'retrieval functions' without the temptation or ability to edit the backend code that runs them (even accidentally). The changes in namespace on an 'import' are getting in my way. I'm looking for a macro-style inclusion of File_A's text within File_B, to be

问题 I have two files, main.s and test.s where test.s looks like this: test: add a1,a2,a2 ...and main.s looks like this: main: call test (very senseless examples). How can I include test in main? I am using gcc like this: gcc -o main main.c But I have no idea how I can use test in there...any help? 回答1: You can include the file just as you would with anything else in GCC: #include"test.S" Were you using NASM you would use: %include "test.s" 来源： https://stackoverflow.com/questions/39457263/include

问题 I have two files, main.s and test.s where test.s looks like this: test: add a1,a2,a2 ...and main.s looks like this: main: call test (very senseless examples). How can I include test in main? I am using gcc like this: gcc -o main main.c But I have no idea how I can use test in there...any help? 回答1: You can include the file just as you would with anything else in GCC: #include"test.S" Were you using NASM you would use: %include "test.s" 来源： https://stackoverflow.com/questions/39457263/include

问题 I have two files, main.s and test.s where test.s looks like this: test: add a1,a2,a2 ...and main.s looks like this: main: call test (very senseless examples). How can I include test in main? I am using gcc like this: gcc -o main main.c But I have no idea how I can use test in there...any help? 回答1: You can include the file just as you would with anything else in GCC: #include"test.S" Were you using NASM you would use: %include "test.s" 来源： https://stackoverflow.com/questions/39457263/include

问题 I have two files, main.s and test.s where test.s looks like this: test: add a1,a2,a2 ...and main.s looks like this: main: call test (very senseless examples). How can I include test in main? I am using gcc like this: gcc -o main main.c But I have no idea how I can use test in there...any help? 回答1: You can include the file just as you would with anything else in GCC: #include"test.S" Were you using NASM you would use: %include "test.s" 来源： https://stackoverflow.com/questions/39457263/include

问题 As I wrote an answer to How is it possible to use pow without including cmath library I fear to have proven that missing an include of a needed header is actually undefined behavior, but since I have not found any consent of that fact I like to impose the formal question: Is missing a required header i.e. #include <iostream> int main() { std::cout << std::pow(10, 2); } Ill-formed ( [defns.ill.formed] ) code? Invoking undefined behavior ( [defns.undefined] )? If it is not 1 and 2, is it

问题 As I wrote an answer to How is it possible to use pow without including cmath library I fear to have proven that missing an include of a needed header is actually undefined behavior, but since I have not found any consent of that fact I like to impose the formal question: Is missing a required header i.e. #include <iostream> int main() { std::cout << std::pow(10, 2); } Ill-formed ( [defns.ill.formed] ) code? Invoking undefined behavior ( [defns.undefined] )? If it is not 1 and 2, is it

问题 I have to include many header files, which are in different sub-directories. Is there a way in Visual Studio (I am using 2005 edition) to set one include path that Visual Studio will search also the sub-directories for header files? 回答1: Setting the folder search paths in the Visual Studio settings to fix an include issue is generally not really a good idea from a design point of view. Your code will be less portable to different machines with different directory lay-outs. My suggestion would