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Contact [7]
3 years ago
8

class bClass{public:void setX(int a);//Postcondition: x = a;void print() const;private:int x;};class dClass: public bClass{publi

c:void setXY(int a, int b);//Postcondition: x = a; y = b;void print() const;private:int y;};Which of the following correctly sets the values of x and y?a. void dClass::setXY(int a, int b){x = bClass.setX(a);b = y;}b. void dClass::setXY(int a, int b){x = bClass::setX(a);y = bClass::setY(b);}c. void dClass::setXY(int a, int b){x = a;y = b;}d. void dClass::setXY(int a, int b){bClass::setX(a);y = b;}
Computers and Technology
1 answer:
MaRussiya [10]3 years ago
6 0

Answer:

The answer to the given question in the option "a".

Explanation:

In the given c++ program the correct sets value of x and y is option a:

void dClass::setXY(int a, int b) //function implementation

{ //function body.

x = bClass.setX(a); //variable x hold value of setX() function.

b = y;  //variable b holds value of y.  

}

And other option are not correct that can be described as:

  • In option b, x is private variable of the base class that is inherit by the derived class but variable y is not part of the base class. that's why it is wrong.
  • In option c, x= a is correct but y=b is not correct. that's why it is wrong.
  • In option d we access the value of the private variable x that is a part of the base class but in this we not use any variable that holds its value. that's why it is wrong.

So the answer to this question is the option "a".  

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Answer:

Following are the program in python language

def cat_rev(x,y,z): # function definition  

   x=x[::-1]# reverse the first string  

   y=y[::-1]# reverse the second string  

   z=z[::-1]# reverse the third string  

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Output:

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Enter the second string:ran

Enter the third string:tan

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Explanation:

Following are the description of program

  • In the main function we read the three value by the user in the "s", "r" and "t" variable respectively.
  • After that call the function cat_rev() by pass the variable s,r and t variable in that function .
  • Control moves to the function definition of the cat_rev() function .In this function we reverse the string one by one and concat the string by using + operator .
  • Finally in the main function we print the reverse of the concat string   .

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