How to use the input and output of a file in a class

I don't bother to check the file operation function.

In short, define a class first, such as file operate, and then this class should have the file path property.

There should be two methods, read and write.

So the format is as follows:

class file_operate{

char *path;Path.

bool read();

bool writ();

file_operate(char *fpath) {strcpy(this->path,fpath);The purpose of this sentence is to save the path, so that even if a program changes the contents of the parameter string on the outside, it still does not change the object.

file_operate()

Close the file IO stream. Functions forgot.

Create an object like this: file operate fo= new file operate("c:/");

In this way, the FO is an operation object for the text document of the C disk file. If you want to read this file, call it; Write calls. If you want to change the file, you can change it to fo->path.

It's good to customize a class, referencing the operation class of the file stream in the member function to read and write the file.

#include

#include

#include

using namespace std ;

class employee

-1 is the largest unsigned integer.

employee( unsigned int _id, string _name ):id( _id ) name( _name)

fstream& operator<<(fstream& of, const employee& e )

fstream& operator>>(fstream& if, employee& e )

int main()

The framework is just that, it's not tested. If you feel clumsy with fstream, use ofstream ifstream instead.

#include

#include

#include

int a[5],b[1];

readdat();

writedat();

void jssort() defines the function jssort() which is used to calculate the value of the middle value and deposit it into.

The main() main function performs three steps: input, write, and output.

readdat() input function.

writedat() output function fclose(out); }

No, you define. h is the header file, the header file only participates in the compilation, not responsible for execution, and should be linked when executing. c is the source file, so your ** should be written in. cout and cin can be executed

Bingo can encapsulate this input and output function in the common function of the class.

4.Insertion function: It is mainly to facilitate the user to insert information such as date and time.

5.Font settings: You can set the display font of the device from the [Font] menu, and the font settings should be able to set the font color.

The font does not need to be saved to a file, i.e. the font settings are only valid for the current time, and do not need to be the same as the last font when exiting the program and running it again.

6.For implementations in the CeditView class, the corresponding menu item for the file function must not use the following id values:

The header files that come with the compiler are included in the include folder of the installation directory, including iostream, math, etch form is fine, and include is used when introduced""<> cannot be used, and this form is recommended in using relative path C++:

include No. h This is the input/output stream include in front of c as not. h denotes that this is a mathematical function that can be used namespace std after introduction; Here's an example of a namespace file operation to introduce an include file stream:

#include

#include

using namespace std;

int main() reads and writes files in text form {char ch; }

cout<<"open file"<

In C++, there is no plain text file operation that jumps to "line", and generally outputs a few lines in the order, after sequential reading (getline), if judgment is performed through conditions, the output is selected, and after the specified output is completed, the break ends the loop statement to close the read file.

A rough example is as follows:

fclose(fp);