C++ 为什么类成员变量在全局类数组构造函数执行后部分工作？

我声明并定义一个全局类数组

testarrs[]={{“1”}，{“2”}
我确保数组中每个元素的构造函数都已执行。
我的测试类声明在文件Test.h中：

#pragma once
#include <iostream>
#include <string>

using namespace std;

class Test {
public:
    string from, suffix;
    Test(string s);
};

为什么
from
成员变量为空？我已将其指定给“abc”。
您的方法参数正在隐藏实际的成员变量“from”。将代码更改为：

#include "test.h"
Test::Test(string variable_not_called_from) {
    from = "abc";
    suffix = "123";
    cout << "Test constructor from = " << from << " suffix = " << suffix << endl;// diagnostic
}

#包括“test.h”
Test:：Test（字符串变量_not_称为_from）{
from=“abc”；
后缀=“123”；
库特
#include "test.h"
Test arrs[] ={ {"1"}, {"2"} };

int main() {
    cout <<" cons[0] test from: " << arrs[0].from << endl;
    cout <<" cons[0] test suffix: " << arrs[0].suffix << endl;
    cout <<" cons[1] test from: " << arrs[1].from << endl;
    cout <<" cons[1] test suffix: " << arrs[1].suffix << endl;
}

Test constructor from = abc suffix = 123
Test constructor from = abc suffix = 123
cons[0] test from:
cons[0] test suffix: 123
cons[1] test from:
cons[1] test suffix: 123

#include "test.h"
Test::Test(string variable_not_called_from) {
    from = "abc";
    suffix = "123";
    cout << "Test constructor from = " << from << " suffix = " << suffix << endl;// diagnostic
}