INFILE不完全类型错误

本文介绍了INFILE不完全类型错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我建立一个程序，它的输入文件格式如下：

标题作者标题作者等等并输出到屏幕标题（作者）标题（作者）等等

我目前得到的问题是一个错误：

  

的ifstream infile中具有不完整的类型，不能被定义为

以下是该程序：

的#include＆LT;＆iostream的GT;＃包括LT＆;串GT;＃包括LT＆;＆ifstream的GT;使用命名空间std;串BOOKTITLE [14];串BOOKAUTHOR [14];INT loadData（字符串路径名）;无效SHOWALL（INT计数器）;诠释的main（）{INT计数器;字符串路径;COUT＆所述;＆下;输入要访问的文件的名称：;CIN＆GT;＆GT;路径;loadData（路径）;SHOWALL（柜）;}INT loadData（字符串路径名）//从加载数据infile中放入数组中{    ifstream的INFILE;    INT计数器= 0;    infile.open（路径）; //打开从主用户输入文件    如果（infile.fail（））     {         COUT＆LT;＆LT; 文件打开失败;         返回0;     }     而（！infile.eof（））     {           INFILE＆GT;＆GT; BOOKTITLE [14]; //获取输入并投入平行阵列           INFILE＆GT;＆GT; BOOKAUTHOR [14];           反++;     }     infile.close;}无效SHOWALL（INT计数器）//显示标题（作者）格式的输入{     COUT＆所述;＆所述; BOOKTITLE＆所述;＆下;（＆所述;＆所述; BOOKAUTHOR＆所述;＆下;）;}

解决方案

文件流定义在头文件＆LT; fstream的方式＆gt; ，你是不是包括它

您应该加上：

的#include＆LT;＆的fstream GT;

I am building a program that takes an input file in this format:

title author title author etc and outputs to screen title (author) title (author) etc

The Problem I am currently getting is a error:

"ifstream infile has incomplete type and cannot be defined"

Following is the program:

#include <iostream> #include <string> #include <ifstream> using namespace std; string bookTitle [14]; string bookAuthor [14]; int loadData (string pathname); void showall (int counter); int main () { int counter; string pathname; cout<<"Input the name of the file to be accessed: "; cin>>pathname; loadData (pathname); showall (counter); } int loadData (string pathname) // Loads data from infile into arrays { ifstream infile; int counter = 0; infile.open(pathname); //Opens file from user input in main if( infile.fail() ) { cout << "File failed to open"; return 0; } while (!infile.eof()) { infile >> bookTitle [14]; //takes input and puts into parallel arrays infile >> bookAuthor [14]; counter++; } infile.close; } void showall (int counter) // shows input in title(author) format { cout<<bookTitle<<"("<<bookAuthor<<")"; }

解决方案

File streams are defined in the header <fstream> and you are not including it.

You should add:

#include <fstream>