C++ program gives a run-time error when strings are used

Question

#include <iostream> 
#include <string.h> 
using namespace std; 

int main () 
{ 
    string st = "Hello world";
    return 0; 
}

and

#include <string> 
int main () 
{ 
    std::string st = "Hello world";
    return 0; 
}

I tried compiling this code using minGW compiler on netbeans. It brings up the following error after the successful build.

RUN FAILED (exit value -1,073,741,511, total time: 93ms)

But it works clean when strings are not used. I would like to know what I am doing wrong here. Thanks in advance.

`std::string` is declared in ``, not `` - does this help? (Even if it doesn't, you should change this) — Joseph Mansfield, Jun 28 '14 at 16:38
there is something wrong with your setup, maybe another libstdc++ in your path? — paulm, Jun 28 '14 at 17:12
Nope mingw is the only c++ compiler it has resolved and I have installed. (I have visual studios could it have made any influence?) — Dinal24, Jun 28 '14 at 17:17
I'm having the exact same problem. I have the same error code and everything. Did you ever find a solution to this? — 4castle, Apr 21 '16 at 06:02
@4castle Nope, I started using visual studio. You can also try Clion and Qt as well. — Dinal24, Apr 21 '16 at 06:17

score 1 · Answer 1 · edited May 23 '17 at 11:45

1

Use c++ strings and don't use using namespace std:

#include <string> //c++ string header

int main () 
{ 
    std::string st = "Hello world";
    return 0; 
}

#include <string.h> is the old C-style string header and most likely isn't what you want to use here. See this question for more details: Difference between <string> and <string.h>?

Note: If you really wanted the old C-style strings then you really should be using #include <cstring> because this will put those functions into the std namespace and won't cause any namespace pollution that can lead to other undesirable outcomes.

Likely what happened was that you used the old style string header and didn't properly initialize those strings. The old C-style strings don't have a constructor and operator= defined like the std::string class.

Edit: After looking at the Netbeans forum this is a problem with Netbeans and not a c++ issue. Try changing the output to an external terminal in Netbeans. Or run the program directly from the command line. If these approaches don't fix the problem or are undesirable then make a post over on the Netbeans forum. Also have a look at this question: Program won't run in NetBeans, but runs on the command line!

edited May 23 '17 at 11:45

Community

1
1

answered Jun 28 '14 at 16:39

shuttle87

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I still get the same error, I tried printing floats, ints and cout << "Hello world" works fine but string str = "Hello world"; gives an error – Dinal24 Jun 28 '14 at 16:47
@user3248168 does the code I posted here produce the same error value when used verbatim? – shuttle87 Jun 28 '14 at 16:49
yes it does! RUN FAILED (exit value -1,073,741,511, total time: 88ms) – Dinal24 Jun 28 '14 at 16:51
@user3248168, this sounds very much like an issue with either your Netbeans configuration or installation. – shuttle87 Jun 28 '14 at 17:02
1

Then I'll re install a compiler. Shall I try Cygwin instead of minGW as it is possible to be the reason? – Dinal24 Jun 28 '14 at 17:09
If you are using only c++ I'd recommend codeblocks, I've found that to be really good. – shuttle87 Jun 28 '14 at 17:19

score 0 · Answer 2 · answered Jun 28 '14 at 16:40

0

Uss #include <string> instead of string.h

answered Jun 28 '14 at 16:40

I tried but it does not work as well! I get the same error – Dinal24 Jun 28 '14 at 16:45
also using std::string instead of the namespace? – Jun 28 '14 at 16:52
1

Are you eble to run a return 0 program? your mingw linking/runtime may be corrupted. the code seems ok. – Jakub Jun 28 '14 at 18:14

C++ program gives a run-time error when strings are used

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