编程类的最终项目将于明天到期,在收到文件名后,如果得到任何帮助,程序会在此模块中崩溃。崩溃我的意思是它输出“此应用程序已请求运行时以异常方式终止它”,然后输出通常的windows "CotD.exe has stopped working"
:
void load(vector<Fish>& stock)
{
char c;
do {
cout << "Welcome to Catch of The Day, enter (f) to choose a file to load from, otherwise enter anything else to load from default file.\n";
cin >> c;
if (c == 'f' || c == 'F')
{
cout << "Enter file name\n";
cin >> file;
}
ifstream fin(file.c_str());
if (fin.fail())
{
cout << "Could not open " << file << " Check the directory location of CotD.exe and try again\n";
}
else
{
while (!fin.eof())
{
Fish f;
string blank;
fin >> f.amt;
fin >> f.prc;
fin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
getline(fin, blank);
stock.push_back(f);
}
fin.close();
break;
}
} while (true);
}
编辑其他相关代码:
#include <iostream>
#include <fstream>
#include <vector>
#include <iomanip>
using namespace std;
//
string file = "default.txt"; //Global variable used to store name of save file.
//It is global so that load() and save() can both access it.
struct Fish
{
string type;
double amt;
double prc;
double val;
};
void addType(vector<Fish>&);
void editStock(vector<Fish>&);
void sortBy(vector<Fish>&);
void sortAsc(vector<Fish>&,char);
void sortDesc(vector<Fish>&,char);
void display(vector<Fish>&);
int search(vector<Fish>&);
void save(vector<Fish>&);
void load(vector<Fish>&);
string getType();
int dispType(string,vector<Fish>&);
int find(string,vector<Fish>&);
double getAmt();
void delType(string,vector<Fish>&);
void menu(vector<Fish>&);
double getPrc();
int main(){
std::vector<Fish> stock;
load(stock);
menu(stock);
save(stock);
cout<<endl<<endl
<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n"
<<"|Thank you for using Catch of the Day|\n"
<<"~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n";
system("Pause");
return 0;
}
我最近写了这个程序,它看起来和我非常相似,并且运行得很完美,我看不出有什么区别:
void load(vector<string>& names)
{
string file, name, bad;
while (true)
{
cout << "Input file name\n";
getline(cin, file);
ifstream fin(file.c_str());
if (fin.fail())
{
cout << "Could not open " << file << ", try again.\n";
}
else break;
}
ifstream fin(file.c_str());
while (!fin.eof())
{
fin >> bad;
fin >> name;
cout << "\"" << name << "\"" << endl;
}
system("Pause");
fin.close();
ifstream fin(file.c_str());
while (!fin.eof())
{
getline(fin, name);
names.push_back(name);
}
system("Pause");
fin.close();
cout << "Names added to list\n";
}
最佳答案
我已经编辑了您的代码,这就是我得到的:
void load(vector<Fish>& stock)
{
char c;
do {
cout << "Welcome to Catch of The Day, enter (f) to choose a file to load from, otherwise enter anything else to load from default file.\n";
cin >> c;
if (c == 'f' || c == 'F')
{
cout << "Enter file name\n";
cin >> file;
}
ifstream fin(file.c_str());
if (fin.fail())
{
cout << "Could not open " << file << " Check the directory location of CotD.exe and try again\n";
}
else
{
Fish f;
string blank;
if (fin>>f.amt)
{
if (fin>>f.prc)
{
getline(fin,blank);
stock.pushback(f);
}
}
fin.close();
break;
}
} while (true);
}
当然,这是不知道文件中有什么以及到底是什么鱼,所以我不知道这是否是您要寻找的。
编辑:如果您可以包括文件,或者只是一个“鱼”的一部分,因为我认为这是文件的内容,那么帮助会容易得多。
关于c++ - 使用fstream fin从文件读取时C++程序崩溃,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/22901068/