XXOO

// report.cpp : Defines the entry point for the console application.

#include "stdafx.h"
#include <iostream>
#include <fstream>
#include <vector>
#include <string>

using namespace std;

enum esex {male, female};

struct StuffInfo {
 string name;
 esex   sex;
 int    age;
 string ID;
};

int file_to_vector(char *name, vector<string> &svec)
{
 string filename(name);
 ifstream infile(filename.c_str());
 if (!infile)
 {
  return 1;
 }

 string s;
 while (infile >> s)
 {
  svec.push_back(s);
 }
 infile.close();

 if (infile.eof())
 {
  return 4;
 }
 if (infile.bad())
 {
  return 2;
 }
 if (infile.fail())
 {
  return 3;
 }
}

int main(int argc, char* argv[])
{
 if (argc != 3)
 {
  cout << "you should enter three arguments" << endl;
  return -1;
 }

 vector<string> svec;
 vector<StuffInfo> stuff;

 switch (file_to_vector(argv[1], svec))
 {
 case 1:
  cout << "error: can not open file" << endl;
  return -1;
 case  2:
  cout << "error: system failure" << endl;
  return -1;
 case 3:
  cout << "error: read failure" << endl;
  return -1;
 }

 vector<StuffInfo>::size_type is = 0;
 vector<string>::size_type    ix = 4;

 const char *p = NULL;

 cout << svec[ix] << endl;
 while ((ix != svec.size()) && ((svec.size() - ix) / 3 >= 0))
 {
  stuff[is].name = svec[ix++];

  if ((svec[ix] != "男") && (svec[ix] != "女"))
  {
   cout << "性别非法" << endl;
   return -1;
  }

  if (svec[ix++] == "男")
  {
   stuff[is].sex = male; 
  }
  else
  {
   stuff[is].sex = female;
  }

  stuff[is].age = atoi(svec[ix++].c_str());
  
  p = svec[ix].c_str();
  while (*p)
  {
   if ((*p > '9') || (*p < '0'))
   {
    cout << "ID非法" << endl;
    return -1;
   }
   ++p;
  }

  stuff[is].ID = svec[ix++];
  ++is;
 }

 int sum  = 0;
 int boy  = 0;
 int girl = 0;

 for (int tmp = 0; tmp != is; ++tmp)
 {
  if (stuff[tmp].sex == male)
  {
   ++boy;
   ++sum;
  }
  else
   if (stuff[tmp].sex == female)
   {
    ++girl;
    ++sum;
   }
 }

 ofstream outfile;
 outfile.open(argv[2], ofstream::app);
 outfile << "总人数：" << sum << endl
  << "男生人数：" << boy << endl
  << "女生人数：" << girl << endl;
 outfile.close();

 return 0;
}