Reading a line from a file

**blueguy** · 09-24-2005

I have a file it has several lines like this (< Readme >)

I need to remove the white spaces and < , > and put readme stirng
in a string .The problem is I do not know how many chars are there in every line.

Thank you

Code:

# include<string>
# include<iostream>
# include<fstream>
using namespace std;
void read ();
int main()
{

	read();
	
	return 0;
}

void read()
{
                                                     		
	fstream is;
	is.open("test");
    string st1;
	char ch;
	char ch1='<';
	char ch2='>';
	while(is.get(ch) != EOF)
	
  

}

**dwks** · 09-24-2005

Post your code . . . .

**blueguy** · 09-24-2005

I added my code...Please help me

**dwks** · 09-24-2005

Code:

void read()
{
                                                     		
	fstream is;
	is.open("test");
    string st1;
	char ch;
	char ch1='<';
	char ch2='>';
	while(is.get(ch) != EOF)
	
  

}

There's nothing in that while loop!

So you want to write a function that will read a line from is, and strip off the < and >

**dwks** · 09-24-2005

Try something like

Code:

cin >> string_variable;

and then remove the first char and last char of the string.

**Tonto** · 09-24-2005

Perhaps, you could use std::getline to read each line from the file into an std::string buffer, and then retrieve the length of the line read using the string's .length() member. Small reference page: http://www.cppreference.com/cppstring/getline.html

>> There's nothing in that while loop!

I'm sure he's fully aware of this. He doesn't seem to have a direction on this and you aren't helping give him one.

**blueguy** · 09-24-2005

Originally Posted by dwks

There's nothing in that while loop!

So you want to write a function that will read a line from is, and strip off the < and >

exactely bade .

If i have some line like < readme > in a file all I want to do is

read only the contents in < > and store it in vector or string.I can use getline but it takes the entire line which is not I want.

Thanks

**dwks** · 09-24-2005

I think getline is what you want. You can read in the whole line, and then manipulate it.

**dwks** · 09-24-2005

For manipulating: erase.

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