包含数组的结构数组。不会编译

Arrays of Structs with arrays in it. Won't compile

本文关键字：数组 编译 结构 包含      更新时间：2023-10-16

我在C++中制作结构数组时遇到问题。 出于某种原因， 这不会编译。 错误指向 Fem 结构，但将其归咎于缺少 ';"' 和缺少函数的标头。这个想法是获取一个结构数组，每个结构都有一个数组和一个字符串。 对此的任何帮助将不胜感激。

/* Global headers and namespace */
#include <iostream>
#include <iomanip>
#include <string>
#include <fstream>
#include <cstdlib>
#include <cctype>
using namespace std;
/* ================================================================ */
/* Global named constants */
const int NUM_ANSWERS = 10;
const int NUM_STRUCTS = 15;
/* ================================================================ */
/* Global type definitions */
// Two struct types, Male and Female
struct Male
{
  int maleAnswers [NUM_ANSWERS];
  string name;
};
struct Fem
{
  int femAnswers [NUM_ANSWERS];
  string name;
};
// Arrays of structs
typedef Fem FemList [NUM_STRUCTS];
typedef Male MaleList [NUM_STRUCTS];
/* ================================================================ */
/* global function prototypes */
void OutputHeader ();
void ReadFile (FemList, MaleList);
/* ================================================================ */
int main ()
{
  FemList fList; // Array of Fem structs
  MaleList mList; // Array of Male structs
  void OutputHeader ();
  void ReadFile (fList, mList);
}
void OutputHeader ()
{
  cout << "==================================================================" << endl;
  cout << "Welcome to the Cheap & Ineffective Dating Service of Tallahassee!" << endl << endl;
  cout << "                       eDisHarmony.com" << endl;
  cout << "==================================================================" << endl << endl;
  cout << "<><><> Initial Client Data as Input <><><>" << endl << endl;
  cout << setw(11) << "Sex" << setw(31) << "Answers" << "Name" << endl;
  cout << setw(11) << "---" << setw(24) << "-------------------" << "--------------------" << endl;
}
void ReadFile (fList, mList)
{
}

去掉主函数中的"void"，使用类型进行函数定义

void ReadFile (fList, mList);

应该是

void ReadFile (FemList fList, MaleList mList);

和 

int main ()
{    
  FemList fList; // Array of Fem structs
  MaleList mList; // Array of Male structs
  void OutputHeader ();
  void ReadFile (fList, mList);    
}

应该是

int main ()
{    
  FemList fList; // Array of Fem structs
  MaleList mList; // Array of Male structs
  OutputHeader ();
  ReadFile (fList, mList);    
}

下面的代码应该可以工作。注意，我稍微增强了一下，不确定这是你想要的吗？1. 为 std 中的标识符提供完整的命名空间2. 通过引用将参数传递给读取文件。你想把文件读到FemList和MaleList中吗，这是你的意图吗？

/* Global named constants */
const int NUM_ANSWERS = 10;
const int NUM_STRUCTS = 15;
/* Global type definitions */
// Two struct types, Male and Female
struct Male
{
  int maleAnswers [NUM_ANSWERS];
  std::string name;
};
struct Fem
{
  int femAnswers [NUM_ANSWERS];
  std::string name;
};
// Arrays of structs
typedef Fem FemList [NUM_STRUCTS];
typedef Male MaleList [NUM_STRUCTS];
/* global function prototypes */
void OutputHeader ();
void ReadFile(FemList&, MaleList&);
int main ()
{
  FemList fList; // Array of Fem structs
  MaleList mList; // Array of Male structs
  OutputHeader();
  ReadFile(fList, mList);
}
void OutputHeader ()
{
  std::cout << "==================================================================" << std::endl;
  std::cout << "Welcome to the Cheap & Ineffective Dating Service of Tallahassee!" << std::endl;
  std::cout << "                       eDisHarmony.com" << std::endl;
  std::cout << "==================================================================" << std::endl;
  std::cout << "<><><> Initial Client Data as Input <><><>" << std::endl;
  std::cout << std::setw(11) << "Sex" << std::setw(31) << "Answers" << "Name" << std::endl;
  std::cout << std::setw(11) << "---" << std::setw(24) << "-------------------" << "--------------------" << std::endl;
}
void ReadFile (FemList &fList, MaleList &mList)
{
}
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