separating a string by \n!!

[munjo5746]

I am trying to separate a input string by \n !
I used getline function to get input.
e.x if I type "I am going to school\ntomorrow", I want to separate this into two string, I am going to school and tomorrow.
This is the code to separate the part!!

while(getline(cin,line)) {
		
		
		if(line == "EOF") break;
		
		for (int i = 0; i < line.size(); i++) {
			if(line[i] == a) {
				str_len = i-init_str;
				lines.push_back(line.substr(init_str,str_len));
				str_len == 0;
				init_str = i+1;
			}
			else if(line[i] != a && i == line.size()-1) {
				lines.push_back(line.substr(init_str));

			}

I asked yesterday about this because I wanted to know why I can't check if new line character \n in string or not...someone said because the getline function discard the new line character...but he did not mention how to solve it..!!
I tried to find how to solve this for 2 days and wrote the code over and over again but could not solve it..anyone have any idea??
This is my project to make a program that breaks down the string into set of words and count the number of words..!!I wrote the code to count the words. so this is only part I have to solve!!!!!

[vlad from moscow]

Let assume that you are using a string stream

std::string s( "I am going to school\ntomorrow" );

std::istringstream is( s );

std::string t;

while ( std::getline( is, t ) ) std::cout << t << std::endl; 

The loop will iterate two times. In the first iteration t will get vaue

I am going to school

In the second iteration t will get value

tomorrow

Is it what you want?

If you include a vector you can rewrite the loop the following way

std::vector<std::string>> sentences;

...
while ( std::getline( is, t ) ) sentences.push_back( t ); 

[munjo5746]

actually the code does not work!! the error says istringstream has initializer but incomplete type!!!
and i tried this code!!

string line;
      	 vector<string> lines;
 
	 while(getline(cin,line)) lines.push_back(line);

and tried to print out by using for loop!!
lets say if I type "I am going to school\ntomorrow"
it prints out "I am going to school\ntomorrow"

I am writing the code in linux..is it make error??
I think i heard somewhere that coding in windows is different than in linux..!!

[vlad from moscow]

You should include required headers as for example <sstream>

[munjo5746]

Thanks.. your code works now!!
but i actually have to get input from the keyboard and i dont know how the istrinstream works!!
I tried to run my code after include the sstream...but it was same!!
if i type "I am going to school\ntomorrow" the program does not separate the string!!
I think if i type it the input by using getline function does not \n as a delimiter.
can u tell me how to do this??

[cire]

and tried to print out by using for loop!!
lets say if I type "I am going to school\ntomorrow"
it prints out "I am going to school\ntomorrow"

There is no '\n' in the strings in the vector. The only way a '\n' appears in the output is if you insert it yourself into the output stream.

#include <vector>
#include <string>
#include <iostream>

int main()
{
    std::vector<std::string> lines ;
    std::string line ;

    const std::string sentinel = "stop" ;

    while ( std::getline(std::cin, line) && line != sentinel )
        lines.push_back(line) ;

    for ( unsigned i=0; i<lines.size(); ++i )
        std::cout << lines[i] << ' ' ;
}

When I go to the
loo, sometimes I take my
own toilet paper and sometimes
I just take my chances.
stop
When I go to the loo, sometimes I take my own toilet paper and sometimes I just take my chances.

[munjo5746]

I read my HW question again and I was misunderstood the question!!
I thought I have get a input with \n and break the string but it was not!!
Thank you very much about your answer!!
I appreciate it!!