Check below program, In the above program, even though array size is 10, after the first array there is exactly 6 extra locations reserved in the stack (12bytes), I am wondering why this extra space got reserved? and this extra space size is varying for different size(Its not 12 for size 20). Can anybody explain the concept behind these allocations?
Tag: g++
Fast byte copy C++11
I need to convert C# app which uses extensively bytes manipulation. An example: Basically BitConverter and Buffer.BlockCopy called 100s times per sec. There are several classes that inherit from the base class above doing more specific tasks. For example: What approach in C++ should I look into? Answer Best option, in my opinion, is to actually go to C –
Error while linking static library to test script
I’m building a static library for a small project, and when I compile it with ar, it correctly links. When I go to include the relevant header file and link the test script to the archive; I get linker errors; Running ar t libuttu.a returns My test script includes the main header file, uttu.hpp, which itself refers to the np
How do I compile and deliver my application without requiring installation of shared libraries on other machines
On my Ubuntu machine I installed libGLEW. However, I did not install it on my other Ubuntu machine. It works on my compiling machine, but now I received the following error after copying my executable to my other machine. I want to find a solution where I don’t have to require my other machine to install the library. Maybe I
How to pass inputs (not arguments) thorugh command line in C/C++?
Say I have the following simple C++ program, and the following command in terminal: When I run this command, it will ask for my input and I have to copy and paste over the input like the following: Is there a way for this to happen in one pass? I don’t mind copy and pasting each time, however I am
Segmentation Fault with g++ in Linux Ubuntu, but not with g++/MingW in Windows, when printing a char string in C++ [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 3 years ago. Improve this question
gcc-7: error: unrecognized command line option ‘-m64’
I’m trying to compile C code on a Jetson Nano and I get this error during compiling. I tried removing any occurrence of ‘m -64’ but it seems like its added automatically. This is the cmd where it fails: /usr/bin/gcc-7 -Wall -Wextra -Wconversion -pedantic -Wshadow -m64 -Wfatal-errors -O0 -g -o CMakeFiles/dir/testCCompiler.c.o -c /home/user/dir/CMakeFiles/CMakeTmp/testCCompiler.c gcc-7: error: unrecognized command line option ‘-m64’
Linker can’t find Lua library definition
So, I’m relatively new to C++ and I’ve been trying to run Lua files in my C++ project. To start off things, I ran this simple code: And the terminal command looks like this: Edit: Corrected to this Lua libraries are installed on my system (Linux), but the linker can’t find the definition for luaL_newstate(), despite the fact that I
how to create a linux shell alias to give to g++ compiler the path of the file to compile?
What I want to do it’s to create an alias for the sentence below: Because I have to compile single files frequently. To do it, I’m trying creating a txt file with the output file name and the path of the file to compile. So I have a txt, called tocompile.txt, file that contains: then, I assign to a var
C – invalid conversion from ‘void*’ to ‘void (*)()’
I am getting the following when I try to compile my program: These are the lines of code that are causing the errors: What am I missing? Answer You have void *function but void* is not a correct type of a function pointer. void (*)() is a type of a function pointer, so probably you should change your function signature: