[C++] Why the class B can't inherit f(int x) of class A? please help me.

Question

Could someone explain why the class B can't inherit f(int x) of class A?
I still dont get it.
How to modify class B , let it inherit f(int x ) of class A?

#include <iostream>
using namespace std;

class A
{
public:
int f() {cout<<3;}
int f(int x) {cout<<x;}
};
class B: public A
{
public:
int f() {cout<<5;}
};

int main() {
B ob;
ob.f(7);
}

Answer 1

either you should remove all the functions in side class B or to redefine them all in side class B

#include <iostream>
using namespace std;

class A
{
public:
int f() {cout<<3;}
int f(int x) {cout<<x;}
};
class B: public A
{

};

int main() {
B ob;
ob.f(7);
}

or

#include <iostream>
using namespace std;

class A
{
public:
int f() {cout<<3;}
int f(int x) {cout<<x;}
};
class B: public A
{
public:
int f() {cout<<5;}
int f(int x) {cout << x;}
};

int main() {
B ob;
ob.f(7);
}

Answer 2

becuause class B must redefine the overloaded function in sides its declaration and this is not done in your code.

Answer 3

@Mohammad And how to modify class B to inherit f(int x) of class A?
@kimanzi I saw output = 7, I confused.

Answer 4

@Johnny why do you say B can't inherit
f(int x) base method? Because you see at output of 7?