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c++ - Function not returning value, but cout displays it
I've been learning C++ for a bit and tried my hand at making a simple function that returns the area of a room ... len * wid ); return answer; } See Question&Answers more detail:os...
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c++ - Alternative for fflush(stdin)?
Is fflush(stdin) is really required in C++ and is it good to do it this way to flush the newline in the buffer? See Question&Answers more detail:os...
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c++ - C2676: binary '<': 'const _Ty' does not define this operator or a conversion to a type acceptable to the predefined operator
I keep getting this error for the code below. Upon reading this, I believed my error to be the it++ in my for loop ... int main() { return 0; } See Question&Answers more detail:os...
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c++ - How to load an RSA key from binary data to an RSA structure using the OpenSSL C Library?
Currently I have my private key saved in a file, private.key, and I use the following function to load it: RSA ... /saves it to a file directly. See Question&Answers more detail:os...
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c++ and <complex.h> with <complex> in separate files
Notes: I am compiling on OSX using Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn) ... going wrong, or what to check? See Question&Answers more detail:os...
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c++ - “Overload” function template based on function object operator() signature in C++98
I want to make a template function that takes a function and a vector and uses the function to map ... .stacked-crooked.com/a/1471088cbc3b8544 See Question&Answers more detail:os...
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c++ - dynamically allocated string arrays failed to be deallocated
I have the following piece of code: string * p = new string[8]; cout<<sizeof(p)<<endl; free(p); ... there anything special with c++ string? See Question&Answers more detail:os...
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c++ - Assigning char array to pointer
I am trying to understand pointers in C++, but I am currently confused with the following: char input_line[ ... pointer which stores an address. See Question&Answers more detail:os...
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c++ - Two template classes being composed of a member of each other
I have a need in my code for two template classes to be composed of a member field of each other. For example, ... this a bug with my compiler? See Question&Answers more detail:os...
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c++ - Why would a struct need a friend function?
I'm trying to build a program whose source I downloaded from the internet. When I try to compile it, I get ... you give me a simple example? See Question&Answers more detail:os...
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c++ - Why won't this compile and how can it be implemented so that it does?
Here is some C++ code I'm playing around with: #include <iostream> #include <vector> #define IN , #define FOREACH(x,y ... << endl; } return 0; } See Question&Answers more detail:os...
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c++ - Template "copy constructor" does not prevent compiler-generated move constructor
Consider the following program and the comments in it: template<class T> struct S_ { S_() = default; // ... to "default'ing" them explicitly. See Question&Answers more detail:os...
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c++ - How to fix a linker error with PKEY_Device_FriendlyName
Upon using PKEY_Device_FriendlyName, I'm getting the following errors: Error 1 error LNK2001: unresolved external symbol ... in my program. See Question&Answers more detail:os...
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c++ - How to re-create tree whose inorder traversal is stored in the file
A special type of tree is given, Where all leaf are marked with distinct symbols and all others nodes are ... build tree from this traversal. See Question&Answers more detail:os...
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c++ - Using concepts to select class template specialization
This question demonstrates how to use C++20 concepts to choose overloads for a function template. I'm trying to ... to express this more simply? See Question&Answers more detail:os...
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c++ - How do I pass a function as parameter?
What is the fastest and shortest way to pass a function as parameter of another function without using other ... the function as argument. See Question&Answers more detail:os...
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c++ - xml parsing using boost
I am parsing below xml file using BOOST library- <da> <m_day Type="int">15</m_day> <m_month Type="int">8</ ... get any. Thanks in Advance !!! See Question&Answers more detail:os...
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c++ - Assembler messages: Error: thumb conditional instruction should be in IT block -- `strexeq r1,r2,[r4]'
I was tried to build .so file. The file contains libraries such as tbb,dlib. When i execute my cpp file, ... , its helpful for me thank you See Question&Answers more detail:os...
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c++ - std::variant and incomplete type: how does it work?
I do understand that std::variant works with incomplete type. However, I don't understand how it can works because, in my ... ; }; int main() {} See Question&Answers more detail:os...
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c++ - Rogue line being drawn to window
I am making a graphing program in C++ using the SFML library. So far I have been able to draw a function to the ... (Vertex(Vector2f(x, y))); } See Question&Answers more detail:os...
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c++ - Working With SFML, getting "Unresolved External Symbol" Output
So I'm making a pong clone, and I'm currently compiling it with the following output: 1>------ Build started: ... ... What am I doing wrong? See Question&Answers more detail:os...
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c++ - googletest Undefined symbols for architecture x86_64 error
Let GTEST_DIR be the environment variable storing the path to the googletest directory. (I cloned googletest-master from ... me to post here. See Question&Answers more detail:os...
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c++ - Add OpenSSL support for Linux Qt Application
Good day. I am creating an application that requires the use of OpenSSL. Problem: The problem is having ... QMAKE_CXXFLAGS += -openssl-linked See Question&Answers more detail:os...
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c++ - Is returning a dereferenced pointer as a reference from a function undefined behavior?
I'm writing a parser for the first time. I'm following this tutorial on Pratt parers. I've got it to work, ... , but hopefully you get the idea. See Question&Answers more detail:os...
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c++ - Improper use of c_str
I have a method defined as below: const std::string returnStringMethod() { std::string myString; // populate ... missing here. thanks, Pavan. See Question&Answers more detail:os...
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c++ - Why do I need to initialize an int variable to 0?
I just made this program which asks to enter number between 5 and 10 and then it counts the sum of the numbers ... So what is the difference ? See Question&Answers more detail:os...
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c++ - Check if class has function with signature
There are other answers on this site using SFINAE but with non C++11 code, and there are others using C ... when calling the check function. See Question&Answers more detail:os...
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c++ - Using Iterators to hide internal container and achieve generic operation over a base container
I basically want to have a base container class which can return a generic iterator that can be used to traverse ... far as I can understand. See Question&Answers more detail:os...
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