read an entire line in a C++ string

hi ..
suppose there is a line at the command prompt with variable number of spaces . How can i scan it in a C++ string ??
a) cin cannot be used as it cannot scan spaces ...and scanf,gets cannot be used as it is a C++ string
If the line was in a file , i could have used
ifstream in("input.txt");
int main(){
string line
getline(in,line);
------------------
}
but if the line is at the command prompt then how do i scan it ??
debjani

re: read an entire line in a C++ string

Okay, I'm not entirely sure what you're asking here. If you are talking about a 'console' window, or the 'command line'.

The first one is the input/output window, the default cin/cout window. You can get the line by using

and specifying 'cin' as the source will allow you to pull that whole line.

However, if you are talking about the command line - where the program is instantiated, it's different. I'm using gcc, so my program binary is compiled as a.out, so as an example (so the ./a.out is me executing my program):

myPrompt# ./a.out paramater1 paramater2 paramater3

where you want paramaters[1-3], you have to "build them into a program" and have your main declaration look like this:

Then you know how many parameters are there, and they are stored in the char* argv[] slots.

Is that clear, or have I confused you on something?

re: read an entire line in a C++ string

no ..
that is fine ...
i got it ...
thanks !!!!

re: read an entire line in a C++ string

No problem, please post again if you get stuck.

re: read an entire line in a C++ string

Here i am facing the same issue but i dont want to use gcc then how we can accompolish the task for windows command prompt ?

re: read an entire line in a C++ string

Everything in this thread is standard C++ and will work with any C++ compiler, you are not limited to gcc