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Pointer Scope Problem

Started by knine Dec 4, 2002 at 7:36 PM 2 replies 450+ views

Original Post

Dec 4, 2002 at 7:36 PM

I have a globally defined vector:

std::vector gvLevelList;

Now I have code to load level names from a text file into this vector like so:

char szLevelName[26];
while(!LevelFile.eof())
{
	LevelFile.getline(szLevelName, 26);
	gvLevelList.push_back(szLevelName);
}

The problem is that when I leave the function that this is in, the data in szLevelName is destroyed, thus destroying the data in the vector. Can anyone tell me how to get around this problem? Thanks in advance for your assistance. k9

acraig

Dec 4, 2002 at 8:05 PM

Try creating the pointers on the heap:

    
while(!LevelFile.eof())
{
   char *szLevelName = new char[26];
   LevelFile.getline(szLevelName, 26);
   gvLevelList.push_back(szLevelName);
}

Of course you have to remember to delete each one in gvLevelList once you are finished with them.

------
Andrew

[edited by - acraig on December 4, 2002 9:06:13 PM]

Evil Bill

Dec 4, 2002 at 8:17 PM

If you're using vector, why not use string?:

    
std::vector<std::string> > gvLevelList;
   
char szLevelName[26];
while(!LevelFile.eof())
{
   LevelFile.getline(szLevelName,26);
   gvLevelList.push_back(szLevelName);
}

HTH

[edited by - Evil Bill on December 4, 2002 9:22:21 PM]

knine

Author

knine

Dec 4, 2002 at 8:19 PM

That worked. Thanks a ton!

k9

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