Open a file for input and read in its content : file open mode « File Stream « C++ Tutorial

1.	Language Basics
2.	Data Types
3.	Operators statements
4.	Array
5.	Development
6.	Exceptions
7.	Function
8.	Structure
9.	Class
10.	Operator Overloading
11.	Pointer
12.	File Stream
13.	template
14.	STL Introduction
15.	string
16.	vector
17.	list
18.	bitset
19.	set multiset
20.	valarray
21.	queue stack
22.	deque
23.	map multimap
24.	STL Algorithms Modifying sequence operations
25.	STL Algorithms Non modifying sequence operations
26.	STL Algorithms Binary search
27.	STL Algorithms Sorting
28.	STL Algorithms Merge
29.	STL Algorithms Min Max
30.	STL Algorithms Iterator
31.	STL Algorithms Heap
32.	STL Algorithms Helper

C / ANSI-C

C Tutorial

C++

Visual C++ .NET

C++ Tutorial » File Stream » file open mode

12.5.1.Open a file for input and read in its content

#include <fstream>

#include <iostream>

using namespace std;

   

int main () 

{

  char buffer[256];

 

  fstream myfile;

  // open it for input and read in

  myfile.open("test.txt",ios::in);

  myfile.getline(buffer,100);

  cout << "The file contains   " << buffer << "\n";

  myfile.close();

 

  return 0;

}

The file contains   This outputting a line.

12.5.file open mode
	12.5.1.	Open a file for input and read in its content
	12.5.2.	Open a file for appending and append
	12.5.3.	Open a file as binary file and get its size
	12.5.4.	Opening text Files for Read and Write
	12.5.5.	Appending to the End of a File
	12.5.6.	Opening files for read and write.

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.