C++矢量指针阵列

有struct_gene和struct_units。我将所有Struck_gene的值读取为vector。我如何分配指针struck_units.has_gene[i]指向struct_gene向量中的某个值，所以我没有写完整副本的stuckt_gene 然后读取它。C++矢量指针阵列

我尝试了一段时间，但没能得到工作液

http://a.imageshack.us/img195/8607/001tfa.jpg

编辑 - 这里是由Jakobud检索代码：

#include <iostream> 
#include <fstream> 
#include <vector> 
#include <time.h> 
#include <stdio.h> 
#include <stdlib.h> 

using namespace std; 
struct struct_gene { 
    string name; 
    string description; 
}; 

struct struct_unit { 
    string name; 
    string surname; 
    int age; 
    int hunger; 
    int happines; 
    vector<struct_gene> *has_genes[12]; 
    struct_unit *maried_to; 
    struct_unit *father; 
    struct_unit *mother; 
}; 

int main() { 
    const int default_unit_count = 4; 
    fstream gene_list; 
    struct_gene * t_struct_gene; 
    t_struct_gene = new struct_gene; 
    gene_list.open("gene_list", ios::in); 
    vector<struct_gene> vector_gene; 
    //string name, description; 

    gene_list >> t_struct_gene->name; 
    getline(gene_list, t_struct_gene->description); 
    while (gene_list) { 
     vector_gene.push_back(*t_struct_gene); 
     gene_list >> t_struct_gene->name; 
     getline(gene_list, t_struct_gene->description); 
    } 
    delete t_struct_gene; 

// for (int i =0; i<vector_gene.size(); i++) { 
//  cout <<vector_gene[i].name <<" "<<vector_gene[i].description<<endl; 
// } 
    struct_unit *t_struct_unit; 
    t_struct_unit = new struct_unit; 

    srand (time(NULL)); 

    vector<struct_unit> vector_units; 

    for (int i=0; i<default_unit_count; i++) { 

     t_struct_unit->name = "unit_name"; 
     t_struct_unit->surname = "unit_surname"; 
     t_struct_unit->age = rand()%200; 
     t_struct_unit->hunger = rand()%70 +30; 
     t_struct_unit->happines = rand()%70 + 30; 
     for (int i=0; i<12; i++) { 
      t_struct_unit->has_genes[i] = vector_gene[rand()%vector_gene.size()]; 
     } 
     t_struct_unit->maried_to = NULL; 
     t_struct_unit->father = NULL; 
     t_struct_unit->mother = NULL; 
     vector_units.push_back(*t_struct_unit); 
    } 

    for (int i=0; i<vector_units.size(); i++) { 
     cout << vector_units[i].name <<" "<<vector_units[i].surname<<endl; 
     cout <<"Age:"<< vector_units[i].age <<" Hunger:"<<vector_units[i].hunger<<" Happines:"<<vector_units[i].happines<<endl; 
     for (int j=0; j<0; j++) { 
      cout <<vector_units[i].has_genes[j].name; 
     } 
     cout <<"==="<<endl; 
    } 
    delete t_struct_unit; 
}

来源

2010-07-14 kurrata

不要发布您的代码为图像。现在没有人可以使用它:( – Tom 2010-07-14 01:31:47

请将您的代码粘贴到问题中，有一个看起来像“101 010”的按钮将其格式化为代码 – Cogwheel 2010-07-14 01:31:49

试试这个;

1）实例struct_unit

struct_unit aunit;

2）然后内部的循环设定在期望的位置（SOME_INDEX基因被你定义）

//inside loop 
vector_gene.push_back(*t_struct_gene); 
aunit.has_genes[SOME_INDEX] = *t_struct_gene; 
//

来源

2010-07-14 01:38:31 Tom

试过这样做，并且它不工作 t_struct_unit- > has_genes [i] = * vector_gene [rand（）％vector_gene.size（）] – kurrata 2010-07-14 01:56:02

t_struct_unit->has_genes[i] = &vector_gene

这将将一个指向您的基因列表的指针分配到单位的i个插槽中。

但要小心，因为vector_gene不是全局变量，所以它（及其所有内容）在函数返回后一段时间内会被填充垃圾。由于它位于main，这对您来说可能不是问题，但您应该了解堆栈和堆分配的区别。

此外，你确定你想每个struct_unit持有struct_gene s的载体的整个阵列？难道你不想让每个人只持有12个基因，而不是12个基因的基因？

来源

2010-07-14 01:40:24 Borealid

现在它是主要的，因为我正在检查这个东西是如何工作的对于后来我计划离开所有载体main（）和对他们做的操作认为函数 – kurrata 2010-07-14 01:44:29

试过这个“t_struct_unit-> has_genes [i] =＆vector_gene [i]”，它没有工作。 ; – kurrata 2010-07-14 01:53:27

对不起，你只有一个基因载体，我的错误，编辑 – Borealid 2010-07-14 01:55:18

http://codepad.org/TZpNS59a：

#include <iostream> 
#include <fstream> 
#include <vector> 
#include <time.h> 
#include <stdio.h> 
#include <stdlib.h> 

using namespace std; 
struct struct_gene { 
    string name; 
    string description; 
}; 

struct struct_unit { 
    string name; 
    string surname; 
    int age; 
    int hunger; 
    int happines; 
    vector<struct_gene> *has_genes[12]; 
    struct_unit *maried_to; 
    struct_unit *father; 
    struct_unit *mother; 
}; 

int main() { 
    const int default_unit_count = 4; 
    fstream gene_list; 
    struct_gene * t_struct_gene; 
    t_struct_gene = new struct_gene; 
    gene_list.open("gene_list", ios::in); 
    vector<struct_gene> vector_gene; 
    //string name, description; 

    gene_list >> t_struct_gene->name; 
    getline(gene_list, t_struct_gene->description); 
    while (gene_list) { 
     vector_gene.push_back(*t_struct_gene); 
     gene_list >> t_struct_gene->name; 
     getline(gene_list, t_struct_gene->description); 
    } 
    delete t_struct_gene; 

// for (int i =0; i<vector_gene.size(); i++) { 
//  cout <<vector_gene[i].name <<" "<<vector_gene[i].description<<endl; 
// } 
    struct_unit *t_struct_unit; 
    t_struct_unit = new struct_unit; 

    srand (time(NULL)); 

    vector<struct_unit> vector_units; 

    for (int i=0; i<default_unit_count; i++) { 

     t_struct_unit->name = "unit_name"; 
     t_struct_unit->surname = "unit_surname"; 
     t_struct_unit->age = rand()%200; 
     t_struct_unit->hunger = rand()%70 +30; 
     t_struct_unit->happines = rand()%70 + 30; 
     for (int i=0; i<12; i++) { 
      t_struct_unit->has_genes[i] = vector_gene[rand()%vector_gene.size()]; 
     } 
     t_struct_unit->maried_to = NULL; 
     t_struct_unit->father = NULL; 
     t_struct_unit->mother = NULL; 
     vector_units.push_back(*t_struct_unit); 
    } 

    for (int i=0; i<vector_units.size(); i++) { 
     cout << vector_units[i].name <<" "<<vector_units[i].surname<<endl; 
     cout <<"Age:"<< vector_units[i].age <<" Hunger:"<<vector_units[i].hunger<<" Happines:"<<vector_units[i].happines<<endl; 
     for (int j=0; j<0; j++) { 
      cout <<vector_units[i].has_genes[j].name; 
     } 
     cout <<"==="<<endl; 
    } 
    delete t_struct_unit; 
}

来源

2010-07-14 01:41:28 kurrata

第62行是我试图写指向stuct_gene向量的地方 – kurrata 2010-07-14 01:48:32

这里是他的代码：

#include <iostream> 
#include <fstream> 
#include <vector> 
#include <time.h> 
#include <stdio.h> 
#include <stdlib.h> 

using namespace std; 
struct struct_gene { 
    string name; 
    string description; 
}; 

struct struct_unit { 
    string name; 
    string surname; 
    int age; 
    int hunger; 
    int happines; 
    vector<struct_gene> *has_genes[12]; 
    struct_unit *maried_to; 
    struct_unit *father; 
    struct_unit *mother; 
}; 

int main() { 
    const int default_unit_count = 4; 
    fstream gene_list; 
    struct_gene * t_struct_gene; 
    t_struct_gene = new struct_gene; 
    gene_list.open("gene_list", ios::in); 
    vector<struct_gene> vector_gene; 
    //string name, description; 

    gene_list >> t_struct_gene->name; 
    getline(gene_list, t_struct_gene->description); 
    while (gene_list) { 
     vector_gene.push_back(*t_struct_gene); 
     gene_list >> t_struct_gene->name; 
     getline(gene_list, t_struct_gene->description); 
    } 
    delete t_struct_gene; 

// for (int i =0; i<vector_gene.size(); i++) { 
//  cout <<vector_gene[i].name <<" "<<vector_gene[i].description<<endl; 
// } 
    struct_unit *t_struct_unit; 
    t_struct_unit = new struct_unit; 

    srand (time(NULL)); 

    vector<struct_unit> vector_units; 

    for (int i=0; i<default_unit_count; i++) { 

     t_struct_unit->name = "unit_name"; 
     t_struct_unit->surname = "unit_surname"; 
     t_struct_unit->age = rand()%200; 
     t_struct_unit->hunger = rand()%70 +30; 
     t_struct_unit->happines = rand()%70 + 30; 
     for (int i=0; i<12; i++) { 
      t_struct_unit->has_genes[i] = vector_gene[rand()%vector_gene.size()]; 
     } 
     t_struct_unit->maried_to = NULL; 
     t_struct_unit->father = NULL; 
     t_struct_unit->mother = NULL; 
     vector_units.push_back(*t_struct_unit); 
    } 

    for (int i=0; i<vector_units.size(); i++) { 
     cout << vector_units[i].name <<" "<<vector_units[i].surname<<endl; 
     cout <<"Age:"<< vector_units[i].age <<" Hunger:"<<vector_units[i].hunger<<" Happines:"<<vector_units[i].happines<<endl; 
     for (int j=0; j<0; j++) { 
      cout <<vector_units[i].has_genes[j].name; 
     } 
     cout <<"==="<<endl; 
    } 
    delete t_struct_unit; 
}

来源

2010-07-14 01:53:48

C++矢量指针阵列

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