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string Deallocation

Posted on 2003-02-21
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Last Modified: 2012-08-13
Guys,
I know string destructor class destroyes a string. Wanted to make sure, if (like in C free()) there is anything we need to explicitly call to deallocate the string in C++?

say:
#include <iostream>
#include <string>

void main()
{
std::string str("sad");
cout<<sad<<endl;

// Do we need to free the string here? or deallocate the assigned memory??

}

Please let me know.
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Question by:pbavishi
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3 Comments
 
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Exceter earned 200 total points
ID: 7995118
>> // Do we need to free the string here? or deallocate the assigned memory??

No. You do not need to free or delete memory allocated by std::string. The class destructor takes care of that for you.

Exceter
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Expert Comment

by:Exceter
ID: 7995992
>> std::string str("sad");
>> cout<<sad<<endl;

By the way, this will not compile. Your string is named str. sad is the text in your string.

Exceter
0
 

Expert Comment

by:Fallen_Knight
ID: 7996970
no, if you don't use the new operator you don't need to free or delete anything at all.

if you had gone

string *str = new String("sad");
cout << str;

//you would have to go:
delete str;


even thou exiting the program free the memory anyway its best to always get into the habit of deleteing what you allocate with new
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