What is the output of the program? #include #include using namespace std; struct Person { int age; }; class First { Person *person; public: First() {person = new Person; person?>age = 20; } void Print(){ cout << person?>age; } }; int main() { First t[2]; for (int i=0; i<2; i++) t[i].Print(); }

Which of the following operators accept integer arguments only? (Choose two.) 

Which code, inserted at line 8, generates the output "100"? #include using namespace std; int fun(int); int main() { int *x = new int; *x=10; //insert code here return 0; } int fun(int i) { return i*i; } 

What happens if characters 'w', 'o', 'r', 'l' and 'd' are entered as input? #include #include using namespace std; int main() { string s1 = "Hello"; string s2; getline( cin, s2 ); cout << s1 + s2; return( 0 ); } 

Which statement should be added in the following program to make work it correctly? using namespace std; int main (int argc, const char * argv[]) { cout<<"Hello"; }