I can't read info

[abirby]

Hello, I started programing an application in order to send sms through a cell phone connected via USB port, but I get this wierd problem I can't read info, "cin" is not executed exept the first one

  #include <iostream>
#include <windows.h>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <fstream>


using namespace std;


int main()
{
     HANDLE hComm;
     char port_name[5];
     char msg[300];

    cout<<"Modem port:    ";
    cin>>port_name;

hComm = CreateFile( port_name,
                    GENERIC_READ | GENERIC_WRITE,
                    0,
                    0,
                    OPEN_EXISTING,
                    FILE_FLAG_OVERLAPPED,
                    0);
if (hComm == INVALID_HANDLE_VALUE)
   // error opening port; abort
        cout<<"ERROR opening port "<<endl;
    else
        cout<<"SUCCESS"<<endl;

cout<<"Votre message:   "; fgets(msg,300,stdin);
cout<<msg;

cout<<"choisir la liste des numeros:   ";
// le constructeur de ifstream permet d'ouvrir un fichier en lecture
std::ifstream fichier( "fichier.txt" );

    if ( fichier ) // ce test échoue si le fichier n'est pas ouvert
    {
        std::string ligne; // variable contenant chaque ligne lue

        // cette boucle s'arrête dès qu'une erreur de lecture survient
        while ( std::getline( fichier, ligne ) )
        {
            // afficher la ligne à l'écran
            std::cout << ligne << std::endl;
        }
    }

    return 0;
}

[Chervil]

"cin" is not executed exept the first one

But there is only one mention of cin (at line 19) in the entire code?

[abirby]

I mean the

fgets(msg,300,stdin);
cout<<msg;

[coder777]

fgets(msg,300,stdin);
is executed (haven't seen this that way before) but cin>>port_name; leaves the end of line in the stream hence fgets() gets an empty line. use ignore() to remove the end of line from the stream.