eror c2075-wont go away
Feb 2, 2009 at 11:26pm UTC
im doing this example project, but i cant seem to figure out why visual studio 2008 keeps giving me error C2075-'Target of operator new()' : array initialization needs curly braces.
it says the error is on line 47
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#include <stdio.h>
#include <string>
#include <vector>
class Foo
{
std::string _str;
public :
Foo(void )
{
printf("Foo: Void constructor\n" );
_str = "" ;
}
Foo ( const char *s )
{
printf("Foo: Full constructor [%s]\n" , s);
_str = s;
}
Foo( const Foo& aCopy )
{
printf("Foo: Copy constructor\n" );
_str = aCopy._str;
}
virtual ~Foo()
{
printf("Foo: Destructor\n" );
}
Foo operator =(const Foo& aCopy)
{
_str = aCopy._str;
return *this ;
}
std::string String()
{
return _str;
}
void setString( const char *str )
{
_str = str;
}
};
int main()
{
printf("Creating array via new\n" );
Foo *f = new Foo[2]("Hello" );// line 47
printf("Creating array on heap\n" );
Foo f1[3];
// Create a vector
printf("Creating vector of foo\n" );
std::vector<Foo> fooVector;
printf("Adding objects to vector\n" );
Foo f2;
Foo f3;
Foo f4;
fooVector.insert( fooVector.end(), f2 );
fooVector.insert( fooVector.end(), f3 );
fooVector.insert( fooVector.end(), f4 );
printf("Deleting array on heap\n" );
delete [] f;
}
Feb 2, 2009 at 11:54pm UTC
I'm sorry, but there is no way to initialize an array, that has been allocated with new. You have to create a walk-around and initialize them yourself.
No explicit per-element initialization can be done when allocating arrays using the new operator
http://msdn.microsoft.com/en-us/library/cb6bd5ek(VS.80).aspx
Feb 3, 2009 at 12:24am UTC
You could do this, though:
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Foo **f=new Foo*[n];
for (int i=0;i<n;i++)
f[i]=new Foo("Hello" );
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