If g++ still gives error Try using: Look at this post: What is __gxx_personality_v0 for? Make sure -lstdc++ is at the end of the command. If you place it at the beginning (i.e. before file.c), you still can get this same error.
Installing a newer (or older) version of GCC than the Ubuntu default version via the package manager does not delete the default version. You get both. You can install as many versions as you like. gcc/g++ will continue to run the default version. If you have installed GCC 7, then you run the new compilers with gcc-7 or g++-7. For … Read more
A .gch file is a precompiled header. If a .gch is not found then the normal header files will be used. However, if your project is set to generate pre-compiled headers it will make them if they don’t exist and use them in the next build. Sometimes the *.h.gch will get corrupted or contain outdated information, so deleting that file and … Read more
Flags (or compiler options) are nothing but ordinary command line arguments passed to the compiler executable. Assuming you are invoking g++ from the command line (terminal): $ g++ -std=c++11 your_file.cpp -o your_program or $ g++ -std=c++0x your_file.cpp -o your_program if the above doesn’t work.
It’s short for “warn all” — it turns on (almost) all the warnings that g++ can tell you about. Typically a good idea, especially if you’re a beginner, because understanding and fixing those warnings can help you fix lots of different kinds of problems in your code.
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 … Read more
Finally I could find the answer in this link. If one uses the MinGW installation file again, one can add some other packages. I installed all Devel packages for MinGW and followed this tutorial which helped me to solve the problem.
This is C++, not Java! Declare arrays like this: Please note that the arrays in C++ must have a size at compile time. In the above example, it is 1000.
The C++ standard says: It is possible to transfer into a block, but not in a way that bypasses declarations with initialization. A program that jumps from a point where a local variable with automatic storage duration is not in scope to a point where it is in scope is ill-formed unless the variable has … Read more
The cstring header provides functions for dealing with C-style strings — null-terminated arrays of characters. This includes functions like strlen and strcpy. It’s the C++ version of the classic string.h header from C. The string header provides the std::string class and related functions and operators. The headers have similar names, but they’re not really related … Read more