new object declaration

[balal.cse]

hi
i came across a program where the object is declared as
Qpixmap instance();
here Qpixmap is a class and i am sure that there is no constructor in
the program .i cant understand ,please help.

Thanks in advance

 

[martyw]

hi
i came across a program where the object is declared as
Qpixmap instance();
here Qpixmap is a class and i am sure that there is no constructor in
the program .i cant understand ,please help.

Thanks in advance

this progam is probably having a line '#include <qpixmap.h>', where the
qpixmap class is defined, a part of qt - see
http://doc.trolltech.com/3.3/qpixmap.html

 

[Michal Nazarewicz]

i came across a program where the object is declared as
Qpixmap instance();
here Qpixmap is a class and i am sure that there is no constructor in
the program.

To me it looks like a function declaration.

http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.2

 

[Pete Becker]

i came across a program where the object is declared as
Qpixmap instance();

This line declares a function named instance that takes no arguments
and returns an object of type Qpixmap.

 

[Juha Nieminen]

hi
i came across a program where the object is declared as
Qpixmap instance();
here Qpixmap is a class and i am sure that there is no constructor in
the program .i cant understand ,please help.

Besides that line declaring a function, like others have said,
even if it created an object, so what if it the class doesn't have
an explicit constructor? It will have an implicit one.