C ++ - 如何从类的构造函数初始化一个单独的类的构造函数？ [英] C++ - How do I initialize a constructor of a separate class from the constructor of a class?

问题描述

基本上我想实现的是在 geneticAlgorithm deltaKinematics 的本地c $ c>

Basically what I am trying to achieve is to create a local (and private) instance of the class deltaKinematics in the class geneticAlgorithm

在 geneticAlgorithm.h 文件中，我有：

class DeltaKinematics; //class is defined in separate linked files

class GeneticAlgorithm {
  //private  
    DeltaKinematics deltaRobot;

public:

    GeneticAlgorithm(); //constructor

};

这很好，但是当我去声明 GeneticAlgorithm 构造函数，我无法解决如何构建 DeltaKinematics的实例

This is all fine, but when I go to declare the GeneticAlgorithm constructor, I can't work out how to construct the instance of DeltaKinematics

这是 geneticAlgorithm.cpp 构造函数：

GeneticAlgorithm::GeneticAlgorithm(){ //The error given on this line is "constructor for 'GeneticAlgorithm' must explicitly initialize the member 'deltaRobot' which does not have a default constructor"

    DeltaKinematics deltaRobot(100); //this clearly isn't doing the trick

    cout << "Genetic Algorithmic search class initiated \n";
}

如何初始化本地实例？

推荐答案

会员初始化程序列表：

GeneticAlgorithm::GeneticAlgorithm() : deltaRobot(100) {
}

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