我希望将var num更改为百分比,而不是若干像素。我该怎么做?
我的站点需要这个:,但它们与像素一起工作,我的网站使用%(因为自动标度(例如,在高清屏幕或全高清屏幕上)
/*动态顶部菜单定位* */
var num = 150 ; //number of pixels before modifying styles 150
$(window).bind('scroll', function () {
if ($(window).scrollTop() > num) {
$('.menu').addClass('fixe
我尝试用"g++ -std=c++11 -o w w.cpp“编译下面的程序,得到错误”cc1plus: error: unrecognized command line option "-std=c++11“”。已尝试使用g++ -Dstd=c++11 -o w w.cpp进行编译,并获得以下错误集:
In file included from /usr/lib/gcc/i686-redhat-linux/4.4.7/../../../../include/c++/4.4.7/iosfwd:41,
from /usr/lib/gcc/i686
temp_holder.clear();
temp_holder << n;
n_str = temp_holder.str();
int f = count(n_str.begin(), n_str.end(), a);
这是我的代码,这是g++输出:
In file included from /usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.0/../../../../include/c++/4.7.0/algorithm:63:0,
from trintatres.cpp:5:
/usr/l
最近,我无意中遇到了“在此范围内未声明”的多次错误,如下所示:
/usr/include/c++/9/ext/string_conversions.h:84:25: error: ‘ERANGE’ was not declared in this scope
84 | else if (errno == ERANGE
| ^~~~~~
In file included from /usr/include/c++/9/system_error:39,
from /usr/include
我已经成功地编译了clang当前的3.3分支。但是,任何文件的C++编译都会失败,并显示错误/错误。这个问题能解决吗?
In file included from /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/iostream:39:
In file included from /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../include/c++/4.7/ostream:39:
In file included from /usr/lib/gcc/x86_64-linux
这是我的代码:
<html>
<head>
<style>
body {
margin: auto;
width: 720px;
}
</style>
</head>
<body>
<p>Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet. Lorem ipsum dolor sit
我最近下载了链接中提到的代码。我的GCC版本是4.1.2。在console中开始出现以下错误之前,编译过程至少进行了一个小时。
LLVM支持声明我需要使用gcc44-c++,这在我们的机器中是不可用的:
Red Hat Enterprise Linux Server release 5.5 (Tikanga)
# yum install gcc44-c++
Loaded plugins: security
ppsd-nonprod-base
我对这个问题的回答是:
FIRSTNAME COURSENAME
---------- --------------------
Anand C++
Bala C++
Dileep Linux and C
Gowri Java
Gowri Linux and C
Gowri C#
John C++
John Oracle
Prem Linux and C
Priya Java
Priya Oracle
Priya C#
Rahul Oracle
但是预期的输
我正在Linux上用C++开发一个程序。gcc的版本是4.5.1 20100924。我想在我的程序中使用std::atomic_int。我已经包含了原子头,如下所示:
include <atomic>
当我编译这个程序时,我得到了以下错误:
In file included from /usr/lib/gcc/x86_64-redhat-linux/4.5.1/../../../../include/c++/4.5.1/bits/atomic_base.h:87:0,
from /usr/lib/gcc/x86_64-redhat-linux/4.
我不小心删除了包含/usr/include/c++中的所有C++头文件的文件夹。我怎样才能恢复
UPDATE我在/usr/include/c++中得到了头文件。然而,即使是一个简单的C++ Hello程序也给了我这个错误
In file included from /usr/include/c++/4.6/bits/localefwd.h:42:0,
from /usr/include/c++/4.6/ios:42,
from /usr/include/c++/4.6/ostream:40,
from /usr/in
我想把64 cpp应用程序变成32位Ubuntu。在编译过程中,我会收到以下错误:
In file included from /usr/include/c++/4.6/i686-linux-gnu/64/bits/os_defines.h:40:0,
from /usr/include/c++/4.6/i686-linux-gnu/64/bits/c++config.h:393,
from /usr/include/c++/4.6/string:40,
from ./util.h:4,
我刚刚更新了我的arch linux系统的最新版本,其中包括gcc 7.1.1。试图建立这样的系统:
#include <functional>
int main(int argc, char** argv) {
return 1;
}
使用命令
clang++ main.cpp -std=c++1z
结果出现错误:
In file included from main.cpp:1:
In file included from /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/7.1.1/../../../../include/c++/7