Thread: Cin.getline() truncates a letter

When I use cin.getline() on the same variable for the second time it truncates the first char, when i type "hello" as the first command, it receives "hello", but when I type it as the second command, it receives only "ello". Why?
Sorry for my bad english :P

It works fine with cin>>variable but why doesnt it work with cin.getline? I like cin.getline, because i can use spaces there.

if you are getting string's
which i hope you are, because
you are posting in c++, you should use


getline( cin, string, '\n' );

where string is your string varaible
and '\n' being newline is your delimiter
these require you include <string> header
of course.


an example

Code:

#include <iostream>
#include <string>

using namespace std;

int main()
{
     string mystring;
     cout << "enter your full name" << endl;
     getline( cin, mystring, '\n' );

     cout << mystring << endl;
     cin.get();
     return 0;
}

I used <cstdlib>,<iostream>,<cstring>,<windows.h> headers

then you should be posting in C, because you are not
using C++ in term of what C++ has to offer.


and what are you using the header <cstdlib>
for? system("pause"); ?
you shouldnt be doing that either.

you should take it upon yourself to use the advantage of the
language. if C is your langauge then you should take it upon
yourself to post in the right forum.

Where the hell should I know that those are c include files? I just started c++ 2 days ago

Code:

#include <iostream>
#include <string>
#include <windows.h>

    #define PORT 3490 // the port client will be connecting to 

    #define MAXDATASIZE 100 // max number of bytes we can get at once 

using namespace std;
int zoneaddr(){
return 0;
}
int info(){
return 0;
}
int access(){
}
int file(){
}
int main(int argc, char *argv[])
{
    cout<<"This program is made by MaXoRaToR!\nEnter the correct password:\n";
    char pow[200];
    char now[200];
    int bow=0;
    cin.getline ( pow, 200, '\n' );
    if ( strcmp ( pow, "thepassword" ) == 0 ){
    cout<<"Welcome! To see, what this program offers, use info command.\n";
    while(strcmp ( now, "end" ) != 0){
    if(bow=1){
    }
    cin.getline(now,200,'\n');
    if (strcmp(now,"zone") == 0){
    zoneaddr();
}
else if(strcmp(now,"info") == 0){
     info();
     }
else if(strcmp(now,"access") ==0){
access();
}
else if(strcmp(now,"file") ==0){
file();
}

else if(strcmp(now,"end") != 0 ){
cout<<"Maxorator does not know a command named "<< now <<"\n";
}
if( strcmp ( now, "end" ) == 0 ){
cout<<"Bye-bye!";
Sleep(1000);
}
else{
    cin.get();
} 
bow=1;
    }}
    else{
    cout<<"Sorry, wrong password!";
    Sleep(1000);
    }
    return EXIT_SUCCESS;
}

Now when I enter a command right after logging in, it gets it correctly, after that it doesnt count the first char. Test it... I removed the function content, because they were long and contained only cout and sleep.

I am using Dev-C++ Compiler

So how can I fix that extra character problem?

Oops!