Quiz on Operators in C++

(i)++ (increment)  

(ii) ?:(conditional operator) 

(iii) &&(logical AND) 

(iv) <<= (Bitwise shift left)

#include <iostream>

using namespace std;

int main()

{

int res;

res = 20*30/5+6;

cout<<res;

return 0;

}

#include<iostream>

using namespace std;

int main()

{

int a,b,c,d,i;

a=40;

b=50;

c=a,b;

d=(a,b);

i = (d++, d + 100, 50 + d);

cout << i;

return 0;

}

#include <iostream>

using namespace std;

int main ()

{

int a, b;

a = 10;

b = ++a * a++;

cout <<“a=”<<a<<“b=”<< b<<” “;

b = a++ * ++a;

cout <<“new a=”<< a<<“new b=”<< b;

return 0;

}

#include <iostream>

using namespace std;

int main()

{

int val1, val2, c;

val1=40;

val2=50;

val1>val2?cout<<“value1 is greater than value2″<<endl:cout<<“value2 is greater than value1″<<endl;

c= (val1> val2)?val1:val2;

cout << c;

return 0;

}

#include <iostream>

using namespace std;

int main()

{

float a;

float b=65.564545;

int c ;

double d=65.567634;

c = (int) b;

a = (float)d;

cout << c <<” “<< a;

return 0;

}

#include <iostream>

using namespace std;

class Rect

{

private:

    int length;

public:

    Rect(int l):length(l) {}

    void fun() const

    {

        ( const_cast <Rect*> (this) )->length = 20;

    }

    int getLength() { return length; }

};

int main(void)

{

    Rect r(10);

    cout << “Old Length: ” << r.getLength() << endl;

    r.fun();

    cout << “New Length: ” << r.getLength() << endl;

    return 0;

}

#include <iostream.h>

using namespace std;

int function(int* ptr)

{

    return (*ptr + 50);

}

int main()

{

    const int value = 20;

    const int *pointer = &value;

    int *ptr1 = const_cast <int *>(pointer);

    cout << function(ptr1);

    return 0;

}

#include <iostream>

using namespace std;

int main()

{

    double value= 55.5;

    int c = value; 

    int d = static_cast<int>(value);

    cout << d++ + ++d;

}

#include <iostream>

using namespace std;

int main()

{

    int i = 20;

    int size = sizeof(++i);

    cout << ” Size of i = ” << size<<endl;

    i=i,++i;

    cout << ” Value of i = ” << i;

    return 0;

}

#include <iostream>

using namespace std;

int main()

{

    int a = 60, b = 50, c=10;

    if (a > b && a >c)

    {

        cout << “a is greater than b and c\n”;

    }

    else if(b>a && b>c)

    {   

        cout << “b is greater than a and c\n”;

    }

    else if(c>a&& c>b)

    {

        cout<<“c is greater than a and b\n”;

    }

    else if(a==b && a==c)

    {

        cout<<“a is equal to b and c”;

    }

    else if(a==b)

    {

        cout<<“a is equal to b”;

    }

    else if(a==c)

    {

        cout<<“a is equal to c”;

    }

    else if(b==c)

    {

        cout<<“b is equal to c”;

    }

    return 0;

}

class Rect

{

    int *ptr;

public:

    Rect (int length = 0)    { ptr = new int(length); }

    void setValue (int l) { *ptr = l; }

    void display()        { cout << *ptr << endl; }

};

int main()

{

    Rect r(50);

    Rect r1;

    r1 = r;

    r.setValue(30);

    r1.display();

    return 0;

}

#include<iostream>

using namespace std;

class Rect

{

    int *ptr;

public:

    Rect (int length = 0)    { ptr = new int(length); }

    void setValue (int l) { *ptr = l; }

    void display()        { cout << *ptr << endl; }

    Rect & operator = (const Rect &r);

};

Rect & Rect::operator = (const Rect &r)

{

    if(this != &r)

     *ptr = *(r.ptr);

   return *this;

}

int main()

{

    Rect r(50);

    Rect r1;

    r1 = r;

    r.setValue(30);

    r1.display();

    return 0;

}

#include <iostream>

using namespace std;

int main()

{

    int a = 20, b = 30;

    bool res = ((a != b) && cout << “QuizOrbit\n”);

    if(res==1)

    cout<<“TRUE”;

    else

    cout<<“FALSE”;

    return 0;

}

#include <iostream>

using namespace std;

int main()

{

    int a = 20, b = 30, c = 50, d = 40;

    if (a > b && a > c && a>d)

        cout << “A is greater than b,c and d”<<endl;

    else

        cout << “Logical And Condition Fails”<<endl;

    if (a > b || a>c || a>d)

        cout << “Either a is greater than b, c or d “<<endl;

    else

        cout << “Neither a is greater than b, c nor d”<<endl;

    return 0;

}