Accessing Inherited Functions C++
Problem Statement :
You are given three classes A, B and C. All three classes implement their own version of func.
In class A, func multiplies the value passed as a parameter by 2 :
class A
{
public:
A(){
callA = 0;
}
private:
int callA;
void inc(){
callA++;
}
protected:
void func(int & a)
{
a = a * 2;
inc();
}
public:
int getA(){
return callA;
}
};
In class B, func multiplies the value passed as a parameter by 3 :
class B
{
public:
B(){
callB = 0;
}
private:
int callB;
void inc(){
callB++;
}
protected:
void func(int & a)
{
a = a * 3;
inc();
}
public:
int getB(){
return callB;
}
};
In class C, func multiplies the value passed as a parameter by 5 :
class C
{
public:
C(){
callC = 0;
}
private:
int callC;
void inc(){
callC++;
}
protected:
void func(int & a)
{
a = a * 5;
inc();
}
public:
int getC(){
return callC;
}
};
You are given a class D:
class D
{
int val;
public:
//Initially val is 1
D()
{
val = 1;
}
//Implement this function
void update_val(int new_val)
{
}
//For Checking Purpose
void check(int); //Do not delete this line.
};
You need to modify the class D and implement the function update_val which sets D's val to new_val by manipulating the value by only calling the func defined in classes A, B and C.
It is guaranteed that new_val has only 2, 3
and 5 as its prime factors.
Input Format
Implement class D's function update_val. This function should update D's val only by calling A, B and C's func.
Constraints
1 <= new_val <= 1000
Note: The new_val only has 2, 3 and 5 as its prime factors.
Solution :
Solution in C :
class D : public A,public B,public C
{
int val;
public:
//Initially val is 1
D()
{
val=1;
}
//Implement this function
void update_val(int new_val)
{
while (new_val!=val) {
if (new_val/val % 2 == 0) A::func(val);
else if (new_val/val % 3 == 0) B::func(val);
else if (new_val/val % 5 == 0) C::func(val);
}
}
//For Checking Purpose
void check(int); //Do not delete this line.
};
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