Question 21
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class BaseClass
{
public:
int *ptr;
BaseClass(int i) { ptr = new int(i); }
~BaseClass() { delete ptr; delete ptr;}
void Print() { cout << *ptr; }
};
void fun(BaseClass x);
int main()
{
BaseClass o(10);
fun(o);
o.Print();
}
void fun(BaseClass x) {
cout << "Hello:";
}
Question 22
What happens when you attempt to compile and run the following code?
#include <iostream>
using namespace std;
class complex{
double re;
double im;
public:
complex() : re(0),im(0) {}
complex(double x) { re=x,im=x;};
complex(double x,double y) { re=x,im=y;}
void print() { cout << re << " " << im;}
};
int main(){
complex c1;
double i=2;
c1 = i;
c1.print();
return 0;
}
Question 23
What is the output of the program given below?
#include <iostream>
using namespace std;
int main (int argc, const char * argv[])
{
float f=?10.501;
cout<<(int)f;
}
Question 24
What is the output of the program?
#include <iostream>
#include <string>
using namespace std;
int main()
{
string s1[]= {"H" , "t" };
string s;
for (int i=0; i<2; i++) {
s = s1[i];
if (i==0)
s.insert(1,"ow");
else
s.push_back('o');
cout << s;
}
return( 0 );
}
Question 25
What happens when you attempt to compile and run the following code?
#include <iostream>
#include <string>
using namespace std;
int f(int i);
int main()
{
int i=0;
i++;
for (i=0; i<=2; i++)
{
cout<<f(i);
}
return 0;
}
int f(int a)
{
return a+a;
}