Function not working properly?

[ferrovial]

Hello every1, i have been learning c++ by reading books, and i was confused when i came into this:

#include <iostream>
#include <stdio>
using namespace std;

int main()
{
    char str[80];
    
    cout << "Please enter a new string: ";
    gets(str);
    cout << "Here is your string: "
    cout << str;

    return 0;
}

Now according to the book, if i input "This is a test" without the "", it only outputs: Here is your string: This


Which is really wierd considering that i am using gets() instead of cin just to anticipate this problem. Can somebody explain to me why the program malfunctions even though i have copied the code from the book correctly?

Thanx in advance.
Ferrovial

[Zhuge]

Works for me. What compiler are you using? The header should be cstdio, not simply stdio and you are missing a semicolon on line 11.

[ferrovial]

Sorry it is correct in my computer, the code is written correctly, not missing punctuation or letters (it is cstdio, i just rewrote the code here, and i made a mistake) and the compiler i use is gnu-gcc on dev cpp 5.1 on windows vista.

[kevinkjt2000]

You may also have to include the string library to be able to use cout for char arrays??? (Not sure on that.)
Regardless try using printf("%s", str) to print the string instead of cout << str.

[ferrovial]

ok i will thanx. also can you explain to me what do you mean by saying include the string library? Because i have never heard about the string library. is it like <stdlib> or something?

[ferrovial]

meh i got it, you must be talking about <cstring>. Silly me, i hadn't noticed it earlier it was 1 page later in my book, from where i was.

[kevinkjt2000]

<string> would be the current C++ library and <cstring> or <string.h> would be the old library C library.
Also if you would like to hunt through library documentation check out: http://cplusplus.com/reference/
You can find out how to use the string libraries from that page.

[filipe]

kevinkjt2000 wrote:

You may also have to include the string library to be able to use cout for char arrays???

No, the << operator is overloaded to work properyl with char*.

@ferrovial: if you want to use std::string, and in C++ you should, you have to #include <string>.

Also, gets() is very unsafe and you should never ever use it. If your book presents gets() but doesn't mention this, you might want to consider a better book. You could do this instead:

string str;
getline(cin, str);

[ferrovial]

@filipe is it because it doesn't limit check (or how it is supposed to be translated from greek?) I mean it doesn't check the array for overflow problems once you write a string with a size more than 80 characters?