Object-oriented analysis and design (OOAD) Question: Download OOAD PDF
Why does the function arguments are called as signatures?
Answer:
The arguments distinguish functions with the same name
(functional polymorphism). The name alone does not
necessarily identify a unique function. However, the name
and its arguments (signatures) will uniquely identify a
function.
In real life we see suppose, in class there are two guys
with same name, but they can be easily identified by
their signatures. The same concept is applied here.
ex:
class person
{
public:
char getsex();
void setsex(char);
void setsex(int);
};
In the above example we see that there is a function setsex
() with same name but with different signature.
(functional polymorphism). The name alone does not
necessarily identify a unique function. However, the name
and its arguments (signatures) will uniquely identify a
function.
In real life we see suppose, in class there are two guys
with same name, but they can be easily identified by
their signatures. The same concept is applied here.
ex:
class person
{
public:
char getsex();
void setsex(char);
void setsex(int);
};
In the above example we see that there is a function setsex
() with same name but with different signature.
| Previous Question | Next Question |
| Why should project managers complete hard problems first in an OOSAD project? | Which is not an attribute of an object? a) behavior b) state c) time d) space |