lvalue required error in c

An understanding of the Left value "lvalue" and Right Value "rvalue" Original address: http://bbs.chinaunix.net/viewthread.php? Tid = 749505 & Read the post"Hello" is of the const char *?I found that many of my friends have incorrect understanding

Lvalueness is an important attribute of expressions in C/C ++. Only one left-value expression can be used to reference and change the value of an object. (In some cases, the right value expression can also be referenced (refer) to an object, and the

1. Download an objectLibminigui-1.3.3.tar.gzMg-samples-1.3.0.tar.gz (example)Minigui-res-1.3.3.tar.gz (resources)Qvfb-1.1.tar.gz (Virtual Frame Buffer) Ii. Compile source code [Note]: 1. Since the instance program is

Http://www.cnblogs.com/dejavu/archive/2012/09/02/2667640.html#commentform left and right values, L-value and R-valueIt has been assumed that the lvalue is the value that can appear to the left of the assignment expression (the side of an assignment

Always want to try to understand and learn the right value of the relevant technical details to organize and share, hope to be able to help interested friends.Rvalue references are a new feature in the C++11 standard. Rvalue references allow

Http://allchange.blog.sohu.com/156456875.htmlSIDE EFFECT (side effects) and sequence points (sequence point) sharingWhen the execution sequence runs to certain specific areas called sequential points, all the side effects that were previously

After c++11, the C + + reference is expanded to a very good lvalue reference, a constant lvalue reference, a very important rvalue reference, and a constant rvalue reference.What are lvalue values? What are rvalue values? Both Lvalue and rvalue are

Move semanticsCompletion of the transfer of ownership, when the copy construction and assignment construction, the target object ownership must be handed over to our new object, the original object will lose ownership, the _p pointer will no longer

SummaryMoving semantics is one of the new features of c++11, and the moving semantics can be used to move objects rather than copies. In some cases, performance can be significantly improved. This article introduces some of the basic concepts in c++1

[Reference the help document of smart appliance control technology. Here we have a very html version, which is very useful for querying, but it cannot be downloaded to CHM version. It cannot be used locally .] 1. # operator not followed by macro