在C++中設置矢量

Question

我試圖設置一個矢量來存儲一組棒球投手。我想存儲一個投手的名字喬·史密斯（字符串）和他在過去兩年的平均得分--2.44和3.68。我還想存儲第二個投手的名字 - 鮑勃瓊斯（字符串）和他的平均得分5.22和4.78。這是一個較大的家庭作業的一部分，但我只是開始使用矢量。我遇到的問題是我的教科書說矢量只能用於存儲相同類型的值，而我找到的所有示例主要使用整數值。例如，我發現cplusplus.com這個例子

// constructing vectors 
#include <iostream> 
#include <vector> 

int main() 
{ 
unsigned int i; 

// constructors used in the same order as described above: 
std::vector<int> first;        // empty vector of ints 
std::vector<int> second (4,100);      // four ints with value 100 
std::vector<int> third (second.begin(),second.end()); // iterating through second 
std::vector<int> fourth (third);      // a copy of third 

// the iterator constructor can also be used to construct from arrays: 
int myints[] = {16,2,77,29}; 
std::vector<int> fifth (myints, myints + sizeof(myints)/sizeof(int)); 

std::cout << "The contents of fifth are:"; 
for (std::vector<int>::iterator it = fifth.begin(); it != fifth.end(); ++it) 
std::cout << ' ' << *it; 
std::cout << '\n'; 

return 0; 
} 

有什麼辦法，我可以改變這個代碼接受一個字符串和兩個雙打？我不需要從用戶那裏得到任何輸入，我只需要在int main（）中初始化兩個投手。我已經爲他們設置了一個類，如下所示，但該任務需要一個向量。

#ifndef PITCHER_H 
#define PITCHER_H 
#include <string> 

using namespace std; 

class Pitcher 
{ 
private: 
    string _name; 
    double _ERA1; 
    double _ERA2; 

public: 
    Pitcher(); 
    Pitcher(string, double, double); 
    ~Pitcher(); 
    void SetName(string); 
    void SetERA1(double); 
    void SetERA2(double); 
    string GetName(); 
    double GetERA1(); 
    double GetERA2();  

}; 

#endif 

#include "Pitcher.h" 
#include <iostream> 
#include <string> 
#include <vector> 
#include <iomanip> 
using namespace std; 

Pitcher::Pitcher() 
{ 
} 

Pitcher::Pitcher(string name, double ERA1, double ERA2) 
{ 
_name = name; 
_ERA1 = ERA1; 
_ERA2 = ERA2; 
} 

Pitcher::~Pitcher() 
{ 
} 

void Pitcher::SetName(string name) 
{ 
_name = name; 
} 

void Pitcher::SetERA1(double ERA1) 
{ 
_ERA1 = ERA1; 
} 

void Pitcher::SetERA2(double ERA2) 
{ 
_ERA2 = ERA2; 
} 

string Pitcher::GetName() 
{ 
return _name; 
} 

double Pitcher::GetERA1() 
{ 
return _ERA1; 
} 

double Pitcher::GetERA2() 
{ 
return _ERA2; 
} 

#include <iostream> 
#include <string> 
#include <vector> 
#include <iomanip> 
#include "Pitcher.h" 

using namespace std; 

int main() 
{ 

Pitcher Pitcher1("Joe Smith", 2.44, 3.68); 

cout << Pitcher1.GetName() << endl; 
cout << Pitcher1.GetERA1() << endl; 
cout << Pitcher1.GetERA2() << endl; 

system("PAUSE"); 
return 0; 
} 

Answer 1

嗯，我想你想存儲投手

vector<Pitcher> pitchers; 
Pitcher p1("name", 0.5, 0.1); //create a pitcher 
pitchers.push_back(p1); //add the pitcher to the vector 
...//fill in some other pitchers 
//to print all the pitchers 
for(unsigned i = 0; i < pitchers.size(); ++i) 
{ 
     cout << pitchers[i].GetName() << " " << pitchers[i].GetERA1() << "\n"; 
} 

的向量希望示例清除一些東西了。

Answer 2

你要像

vector<Pitcher*> *vecPit=new vector<Pitcher*>(); 

你

vecPit->push_back(new Pitcher("string", 2.123, 2.123)