我的程序旨在从包含标题和作者列表的文件中获取输入。该文件如下所示：
标题 相关作者 下一个标题 相关作者 等等
我遇到的问题是我的 showBooksByTitle 和 showBooksByAuthor 函数。现在这段代码只返回完全匹配并且还打印一个空的换行符和一个带有一些空格和 () 的新行。
当然，非常感谢任何帮助。这是我编程的第一年。为了安全起见，我已经包含了整个代码，我不会遗漏任何可能出现问题的东西。
#include <iostream>
#include<string>
#include<fstream>
#include<cstring>
using namespace std;
struct Book {
string title;
string author;
};
const int ARRAY_SIZE = 1000;
Book books [ARRAY_SIZE];
int loadData (string);
void showAll (int);
int showBooksByAuthor (int, string);
int showBooksByTitle (int, string);
int main() {
//Declare variables
string pathname;
string title;
string name;
string word;
int count;
char response;
//ask user for pathname
cout << "What is the path of the library file? ";
cin >> pathname;
cout << endl;
count = loadData(pathname);
//input data into arrays
loadData(pathname);
cout << endl << count << " records loaded successfully." << endl << endl;
//Show user menu
cout << "Please enter Q to Quit, A to search for the Author, T to search for the Title, "
<< endl << "or S to Show all: ";
cin >> response;
switch(response) {
case 'q':
break;
case 'Q':
break;
case 'a':
cout << endl << "Please enter author's name: ";
cin >> name;
showBooksByAuthor(count, name);
break;
case 'A':
cout << endl << "Please enter author's name: ";
cin >> name;
showBooksByAuthor(count, name);
break;
case 't':
cout << endl << "Please enter all or part of the title: ";
cin >> title;
showBooksByTitle(count, title);
break;
case 'T':
cout << endl << "Please enter all or part of the title: ";
cin >> title;
showBooksByTitle(count, title);
break;
case 's':
cout << endl;
showAll(count);
break;
case 'S':
cout << endl;
showAll(count);
break;
default:
cout << endl << "Invaled input, please try again: ";
break;
}
//pause and exit
cout << endl;
system("PAUSE");
return 0;
}
int loadData(string pathname) {
int i = 0;
int j = 0;
ifstream library;
//open file, if not successful, output error message
library.open(pathname.c_str());
if (!library.is_open()) {
cout << "Unable to open input file." << endl;
return -1;
}
//reads title and author from file into designated string
//this is assuming title comes first and author comes after
while(!library.eof()) {
getline(library, books[i].title);
getline(library, books[i].author);
i++;
}
return i;
}
void showAll (int count) {
for (int i = 0; i < count; i++) {
cout << books[i].title << " (" << books[i].author << ")" << endl;
}
}
int showBooksByAuthor(int count, string name) {
int found;
for(int n = 0; n < 28; n++) {
found = name.find(books[n].author);
if(found != string::npos) {
cout << endl << books[n].title << " (" << books[n].author << ")" << endl;
}
}
return 0;
}
int showBooksByTitle (int count, string title) {
int found;
for(int n = 0; n < 28; n++) {
found = title.find(books[n].title);
if(found !=string::npos) {
cout << endl << books[n].title << " (" << books[n].author << ")" << endl;
}
}
return 0;
}