无法在类中创建方法

Question

我是c ++的新手，但对java有过一些经验。我正在尝试创建一个类但是当我尝试在类中创建一个新方法时，我得到了几个错误（这是我的.cpp文件）

//.cpp file
#include "Test.h"
#include "Test.h"
#include <iostream>//unresolved inclusion
using namespace std;

void speak() {

    if (happy) {//Symbol hapy could not be resolved
        cout << "Meouw!" << endl;
    } else {
        cout << "Ssssss!" << endl;
    }
}

void Test::makeHappy() { // member decleration not found
    happy = true;//Symbol hapy could not be resolved
}

void Test::makeSad() { // member decleration not found
    happy = false;//Symbol hapy could not be resolved
}

我在我的heder文件中没有出现任何错误，但包含它只是以防万一

＆＃13;

＆＃13;

#ifndef TEST_H_
#define TEST_H_

class Test {
private:
	bool happy;

public:
	void makeHappy();
	void makeSad();
	void speak();
};

#endif /* TEST_H_ */

Finally I have another .cpp file I use which also gets errors

#include <iostream>//unresolved inclusion
#include "Test.h"
#include "Test.cpp"
using namespace std;

int main() {
	Test jim;
	jim.makeHappy();//method make happy could not be resolved
	jim.speak();//method speak could not be resolved

	Test bob;
	bob.makeSad();//method make happy could not be resolved
	bob.speak();//method speak could not be resolved

	return 0;
}
This is the new error message I get when compiling

<!-- begin snippet: js hide: false -->

＆＃13;

＆＃13;

＆＃13;

很抱歉，如果这个问题是开放式的，但我似乎无法在其他地方找到答案。

Answer 1

这是你的头文件Test.h：

1. 快乐的成员被命名为bhappy _
2. 让私人成员考虑添加getter和setter公共成员函数

#ifndef TEST_H_
#define TEST_H_

class Test {
private:
	bool bhappy_;
public:
    Test() // ctor
    virtual ~Test() // dtor
public:
	void makeHappy();
	void makeSad();
	void speak();
};

#endif /* TEST_H_ */

这是你的Test.cpp文件：

1. 建议不要使用namespace std;
2. 两次不要包含标题

//.cpp file
#include "Test.h"
#include <iostream>//unresolved inclusion

//ctor
Test::Test() : bhappy_(false)
{}

Test::~Test(){}

void Test::speak() {

    if (bhappy_) {//Symbol hapy could not be resolved
        std::cout << "Meouw!" << endl;
    } else {
        std::cout << "Ssssss!" << endl;
    }
}

void Test::makeHappy() {
    bhappy_ = true;//Symbol hapy could not be resolved
}

void Test::makeSad() { // member decleration not found
    bhappy_ = false;//Symbol hapy could not be resolved
}

这是你的主要功能：

#include "Test.h"

int main(int argc, char** argv) {
    Test jim;
    jim.makeHappy();//method make happy could not be resolved
    jim.speak();//method speak could not be resolved

    Test bob;
    bob.makeSad();//method make happy could not be resolved
    bob.speak();//method speak could not be resolved

    return 0;
}

Answer 2

您需要指定Test :: speak（）。 应该使用这个。使用class属性。想想getter和setter。

最后，看看C ++培训，它应该是有用的^^。

见。