我正在尝试在没有太多 I/O 或使用文本文件经验的情况下完成 CSE 实验室。该程序的目标是根据用户输入的单词和定义创建字典。输出文本文件的格式应该是
条目数(作为数字)
单词
定义
单词
定义
等等。
此时,如果所有单词都是“Alberta”且定义为“Threesome”,则输出显示为:
1
阿尔伯塔
三人行
2艾伯塔省
三人行
2艾伯塔省
三人行
显然有些不对劲。这是生成的代码:如果它很混乱并且输出语句被奇怪地分开,我很抱歉,我已经尝试了一段时间。
#include <iostream>
#include <string>
#include <fstream>
#include <stdlib.h>
using namespace std;
int main()
{
string name; // Name of writing/reading document
cout << "Please enter the path (including file name) for the dictionary you want to create: " ;
getline(cin,name); // Inputs name
fstream dicFile;
int addcount = 0; // number of times file has been added to.
int choice = 0; // Controls while loop
while (choice != 3)
{
cout << "- - - - - - - - - -" << endl;
cout << "1) Add a word to the dictionary" << endl;
cout << "2) Print Dictionary" << endl;
cout << "3) Quit" << endl;
cout << "Choose an option from the menu: ";
string choiceS;
getline(cin,choiceS);
choice = atoi(choiceS.c_str());
string wordAdd; // Stores word to be added
string defAdd; // Stores definition to be added
int size = 1; // Number of entries after the first entry
if(choice > 0 && choice < 4)
{
cout << "- - - - - - - - - -" << endl;
if(choice == 1)
{
if(addcount == 0)
{
dicFile.open(name.c_str(),ios::in|ios::out|ios::app);
cout << "Enter a word or phrase to add to the dictionary: ";
getline(cin,wordAdd);
dicFile << size;
dicFile << endl;
dicFile << wordAdd;
dicFile << endl;
cout << "Enter the definition for \"" << wordAdd << "\": ";
getline(cin,defAdd);
dicFile << defAdd << endl;
dicFile.close();
addcount++;
}
else
{
dicFile.open(name.c_str(),ios::in|ios::out|ios::app);
size = size + 1;
dicFile << size;
dicFile.close();
dicFile.open(name.c_str(),ios::in|ios::out|ios::app);
cout << "Enter a word or phrase to add to the dictionary: ";
getline(cin,wordAdd);
dicFile << wordAdd;
dicFile << endl;
cout << "Enter the definition for \"" << wordAdd << "\": ";
getline(cin,defAdd);
dicFile << defAdd << endl;
dicFile.close();
}
}
if(choice == 2)
{
if(true)
{
dicFile.open(name.c_str(),ios::in);
string readSize;
int readSizei;
getline(dicFile,readSize);
readSizei = atoi(readSize.c_str());
for(int i = 0; i < readSizei*2 + 1; i++)
{
string word;
string def;
getline(dicFile,word);
cout << word << endl;
getline(dicFile,def);
cout << def << endl;
}
dicFile.close();
}
else
{ cout << "- - - - - - - - - -" << endl;
cout << "The dictionary is empty!" << endl;
}
}
}
else
{ cout << "- - - - - - - - - -" << endl;
cout << "Invalid menu selection (number should be between 1-3)" << endl;
}
}
}
为了覆盖文本文件的第一行,但在选择选项 2 时将新定义附加到文件中,我需要做什么?对 I/O 来说相当新。谢谢你的时间。