Apr 23, 2015 at 9:46am UTC
Hello!
Please, can someone help me see th error?
Class is retyped from the net. It has no members that are NOT functions. Is that ok?
I wrote main, but both functions say "not delared in this scope" ! Please, does someone see the error faster than me? Many thanks, I am in a hurry!
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class calc
{
public :
int multiply(int x, int y);
int add(int x, int y);
};
int calc::multiply(int x, int y)
{
return x*y;
}
int calc::add(int x, int y)
{
return x+y;
}
int main(){
multiply(3,4);
add(1,2);
retun 0;
}
Last edited on Apr 23, 2015 at 9:46am UTC
Apr 23, 2015 at 9:59am UTC
You declared the member functions at class named calc scope.
and you have to declare the object to invoke its member functions.
Or you can declare them with static:
public:
static int multiply(int x,int y);
And invoking with calc::
calc::multiply(3,4);
Read the books for Function chap and Member function (Probably at class chap)
Last edited on Apr 23, 2015 at 12:22pm UTC
Apr 23, 2015 at 11:33am UTC
This program is NOT WORKING, compiler answers that add and multiply ARE NOT DECLARED.
I do not see on eyes that they are NOT DECLARED.
Anyway, becaue of them being not declared, the program is not working and so I am confused.
Did someone try on its ovn compiler and which one?
Many thanks!!
Apr 23, 2015 at 11:38am UTC
The add and multipy functions are members of the calc class (why?) so to call these functions you first have to create a calc object.
1 2 3
calc obj;
obj.multiply(3,4);
obj.add(1,2);
Last edited on Apr 23, 2015 at 11:40am UTC
Apr 23, 2015 at 11:53am UTC
The example on the net has no non-function members.
Is that ok, or is that just short way of writting?
Apr 23, 2015 at 12:16pm UTC
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int multiply(int x, int y)
{
return x*y;
}
int add(int x, int y)
{
return x+y;
}
int main()
{
multiply(3,4);
add(1,2);
return 0;
}
So this is what you want , huh?
And you actually didn't declare at global scope , you ACTUALLY DECLARED AN MEMBER FUNCTION at CLASS SCOPE
Last edited on Apr 23, 2015 at 12:18pm UTC