今晚我要完成最后的调试。我的问题是我已经编写这段代码几天了,它有一些问题。 Previous Post
它现在可以编译并且不会崩溃,但是我的函数有一些问题无法正常工作(或根本无法正常工作)。
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
string bookTitle [50];
string bookAuthor [50];
int loadData (string pathname);
int showall (int counter);
int authorSearch (string bookAuthor [50]);
int main ()
{
string pathname;
int counter=0;
char choice;
cout<<"Input the name of the file to be accessed: ";
cin>>pathname;
loadData (pathname);
showall (counter);
cout<<"\n\n\n\n What would you like to do \n (A for Author Search , T for Title Search, Q to quit):";
cin>>choice;
while (choice != 'Q' , choice != 'q')
{
if (choice == 'A', choice == 'a')
{
int authorSearch (string bookAuthor [50], char choice);
}
if (choice == 'T', choice == 't')
{
int titleSearch (string bookTitle [50], char choice);
}
}
cout<<"Press <Enter> to Exit";
cin.ignore();
cin.get();
return 0;
cout<<"Press <Enter> to Exit";
cin.ignore();
cin.get();
return 0;
}
int loadData (string pathname) // Loads data from infile into arrays
{
fstream infile;
int counter = 0;
infile.open(pathname.c_str()); //Opens file from user input in main
if( infile.fail() )
{
cout << "File failed to open";
return 0;
}
while (!infile.eof())
{
infile >> bookTitle [counter] ; //takes input and puts into parallel arrays
infile >> bookAuthor [counter];
counter++;
}
infile.close();
}
int showall (int counter) // shows input in title(author) format
{
cout<<bookTitle<<"("<<bookAuthor<<")";
}
void authorSearch (string bookAuthor [50], char choice) // Function to search Author Array
{
string target = "";
cout<<"Which author would you like to search for: "<<target; //input
for (int count = 0; count++;)
{
if(bookAuthor[count] == target) //tests input against array and outputs result
{
cout<<bookTitle[count]<<bookAuthor[count];
}
}
}
void titleSearch (string bookTitle [50], char choice) // Function to Serch Title Array
{
string target = "";
cout<<"Which author would you like to search for: "<<target; //input
for (int count = 0; count++;)
{
if(bookAuthor[count] == target) //tests input against array and outputs result
{
cout<<bookTitle[count]<<bookAuthor[count];
}
}
}
最新版本,无重大改进。选择菜单后,我无法使用这些功能。 ShowAll 似乎有效但输出十六进制。再次感谢大家!
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
string bookTitle [50];
string bookAuthor [50];
int loadData (string pathname);
int showall (int counter);
void authorSearch (string bookAuthor [50]);
void titleSearch (string bookTitle [50]);
int main ()
{
string pathname;
int counter=0;
char choice;
cout<<"Input the name of the file to be accessed: ";
cin>>pathname;
loadData (pathname);
showall (counter);
cout<<"\n\n\n\n What would you like to do \n (A for Author Search , T for Title Search, Q to quit):";
cin>>choice;
while (choice != 'Q'|| choice != 'q')
{
if (choice == 'A'|| choice == 'a')
{
void authorSearch (string bookAuthor [50], char choice);
}
if (choice == 'T'|| choice == 't')
{
void titleSearch (string bookTitle [50], char choice);
}
}
cout<<"Press <Enter> to Exit";
cin.ignore();
cin.get();
return 0;
}
int loadData (string pathname) // Loads data from infile into arrays
{
fstream infile;
int counter = 0;
infile.open(pathname.c_str()); //Opens file from user input in main
if( infile.fail() )
{
cout << "File failed to open";
return 0;
}
while (!infile.eof())
{
infile >> bookTitle [counter] ; //takes input and puts into parallel arrays
infile >> bookAuthor [counter];
counter++;
}
infile.close();
}
int showall (int counter) // shows input in title(author) format
{
cout<<bookTitle<<"("<<bookAuthor<<")";
}
void authorSearch (string bookAuthor [50], char choice) // Function to search Author Array
{
string target = "";
cout<<"Which author would you like to search for: "<<target; //input
for (int count = 0; count++;)
{
if(bookAuthor[count] == target)
{
cout<<bookTitle[count]<<bookAuthor[count];
}
}
}
void titleSearch (string bookTitle [50], char choice) // Function to Serch Title Array
{
string target = "";
cout<<"Which title would you like to search for: "<<target; //input
for (int count = 0; count++;)
{
if(bookAuthor[count] == target) //tests input against array and outputs reults
{
cout<<bookTitle[count]<<bookAuthor[count];
}
}
}
最佳答案
逗号运算符应分别替换为符合逻辑的and
或or
、&&
和||
。参见 uses of the comma operator .此外,authorSearch
是一个 void
函数。如果您想调用 authorSearch
,只需编写 authorSearch(...)
而不是 int authorSearch(...)
。
此外,您需要确保您的原型(prototype)与您的实现一致。 int authorSearch (string bookAuthor [50])
与 void authorSearch (string bookAuthor [50], char choice)
不同。您不匹配它们的类型和它们的参数。
关于c++ - 数组和搜索它们,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9848821/