C++ non-aggregate cannot be initialized

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原创 2023-04-27 10:17:42 447 阅读 AI 写同款· GEO 优化 ›

VScode for m1配置以及解决non-aggregate type ‘vector＜int＞‘ cannot be initialized with an initializer list VScode for mac m1配置C++环境参考解决C++编译，non-aggregate type ‘vector’ cannot be initialized with an initializer list的问题问题发现写代码过程中，发现在vector初始化时，使用大括号初始化无法通过编译 vector<int> vec = {1, 2, 3, 4, 5}; 报错：non-aggregate type ‘vector’ cannot be initialized with a 阅读详情

问题复现

#include <iostream>
#include <vector>
#include <string>

using  namespace std;

int main()
{
    vector<string> msg = {"Hello", "C++", "World", "from", "VS Code", "and the C++ extension!"};

    for (const string& word : msg)
    {
        cout << word << " ";
    }
    cout << endl;
}

运行代码结果

g++ hello.cpp -o  hello 
hello.cpp:9:20: error: non-aggregate type 'vector<std::string>' (aka 'vector<basic_string<char, char_traits<char>, allocator<char> > >') cannot be initialized with an initializer list
    vector<string> msg = {"Hello", "C++", "World", "from", "VS Code", "and the C++ extension!"};
                   ^     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
hello.cpp:11:29: warning: range-based for loop is a C++11 extension [-Wc++11-extensions]
    for (const string& word : msg)