Structure
[SET – 1]

1

Give the output of the following program. Assuming all the desired header files are already included, which are required to run the code.


struct Pixel
{
            int C, R;
};


void Display(Pixel P)
{
            cout << "Col "<< P.C << " Row " << P.R << endl;
}


int main()
{
            Pixel X = {40,50}, Y, Z;
            Z = X;
            X.C += 10;
            Y = Z;
            Y.C += 10;
            Y.R += 20;
            Z.C -= 15;
            Display(X);
            Display(Y);
            Display(Z);

            return 0;
}

2

Find the output of the following program. Assuming all the desired header files are already included, which are required to run the code.

struct Play
{
            int score, bonus;
};


void calculate(Play &P, int N = 10)
{
            P.score++;
            P.bonus += N;
}


int main()
{
            Play PL = {10, 15};
            calculate(PL, 5);
            cout << PL.score << ":" << PL.bonus << endl;
            calculate(PL);
            cout << PL.score << ":" << PL.bonus << endl;
            calculate(PL, 15);
            cout << PL.score << ":" << PL.bonus << endl;

            return 0;
}

3

Find the output of the following program. Assuming all the desired header files are already included, which are required to run the code.


struct MyBox
{
            int length, breadth, height;
};


void dimension (MyBox M)
{
            cout << M.length << "x" << M.breadth << "x";
            cout << M.height << endl;
}


int main ()
{
            MyBox B1 = {10, 15, 5}, B2, B3;
            ++B1.height;
            dimension(B1);
            B3 = B1;
            ++B3.length;
            B3.breadth++;
            dimension(B3);
            B2 = B3;
            B2.height += 5;
            B2.length--;
            dimension(B2);

           return 0;
}

4

Rewrite the following program after removing the syntactical errors (if any). Underline each correction.

struct Pixels
{
            int color, style;
}

void showPoint(Pixels P)
{
            cout << P.color, P.style << endl;
}

int main()
{
            Pixels Point1 = (5, 3);
            showPoint(Point1);
            Pixels Point2 = Point1;
            color.Point1 += 2;
            showPoint(Point2);

            return 0;
}

5

Declare a structure to represent a complex number (a number having a real part and imaginary part). Write C++ functions to add, subtract, multiply and divide two complex numbers.

6

An array stores details of 25 students (rollno, name, marks in three subject). Write a program to create such an array and print out a list of students who have failed in more than one subject.