问题描述
当我尝试在 C++ 中初始化 int 向量时,我总是得到预期的 ';'在声明结束时"错误.
when I try to initialise a vector of int in c++, I always get the "expected ';' at end of declaration" error.
我使用了 C++ Primer 中的原始代码
I used the original code from C++ Primer
vector<int> v{1,2,3,4,5,6,7,8,9};
和
$ g++ -o test test.cpp
我认为这是一个愚蠢的问题,但我确信有一个;"......并且无法搜索答案..谢谢.
I think this is a silly question to ask, but I am sure that there is a ";"... and can not manage to search an answer..Thanks.
推荐答案
g++
默认采用 C++03,而您尝试使用的语法来自 C++11.将编译行改为:
g++
assumes C++03 by default, and the syntax you're trying to use came in C++11. Change the compilation line to:
$ g++ -std=c++11 -o test test.cpp
或者,我个人更喜欢:
$ g++ -Wall -Werror -pedantic -std=c++1y -o test test.cpp
:)
注意:您是使用 c++0x
、c++11
还是 c++1y
(可能还有 c++14
)主要取决于编译器版本,因为这些版本是后续引入的.
Note: whether you'd use c++0x
, c++11
, or c++1y
(and possibly c++14
) depends mostly on the compiler version, as those were introduced in succesion.
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