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Okay this has me scratching my head :
I can use cin.getline in main fine by e.g.
char test[10];
cout << "input : " ;
cin.getline(test, 10);
cout << "test is " << test;
BUT when in a function it skips the input part and moves onto the next bit off code !!!
Can someone please help me out.
Thanks
Blim
This is 99.99% probable that you have some chars left over in the streambuf before calling getline. getline takes this as its input. If you use cin>>something then the \n will be left in the stream. try adding cin.ignore(80,'\n') before the cin.getline()
Thanks stoned_coder, keep puffing that erb for me !
Don't use cin.
Use only cin.getline, also for input of numbers.
Convert the string to int, double ... with atoi or atof.
Why?
Let's say you've defined int a;
with cin >> a; you hope to get an integer.
But if the user inputs anything else as an integer
you're in trouble, even cin.ignore() won't be able
to clear the buffer.
A combination of cin.clear() and cin.ignore() will clear the buffer and reset the stream.Quote:
But if the user inputs anything else as an integer
you're in trouble, even cin.ignore() won't be able
to clear the buffer.
Hey im kind of a newbie at c++ programming and i was wondering...
What's the difference between cin.get and cin.getline?
Thanks in advance for the help
cin.get(character) gets a character
cin.getline(*char[], count, termchar) gets a line of characters up to a term character.
getline(cin,string,termchar) is a different function found in cstring and it gets characters and turns them into an ansi null terminated string. (which really isn't different than a null terminated array of characters... for most aspects)
All this is to the best of my recollection.... which is a bit fuzzy at the moment.
Actually, if you are using Visual C++, cin.get can function like cin.getline. The only difference is that cin.getline will "eat" the delimeter and cin.get will leave it in the buffer.
David
>>>cin.get can function like cin.getline
syntax?
cin.get(buff,10,'\n');
and it's not just Visual C++, but part of the standard.
Hey I can solve the whole thing with only 1 function.
char *fgets(char *buf, size_t len, FILE *stream);
e.g.
fgets(myarray, sizeof myarray, stdin);
doesn't leave the \n character in the buffer and doesn't allow buffer overflows.
It is still C++, thought it is also in the C library.
:cool:
That's what istream::getline() does. It doesn't flush the input buffer after it's done.Quote:
doesn't leave the \n character in the buffer and doesn't allow buffer overflows.