CS225 Headbangers
, #2
NetId:
1. What is true about the following C++ program:
1: int main () {
2: int *x = 0;
3: int &a = *x;
4: return 0;
5: }
(a) This generates compile error in line 2.
(b) This generates compile error in line 3.
(c) This compiles fine, but will generate segmenation fault when executed (runtime error).
(d) This compiles and executes without any system error.
2. Consider the following C++ class definition:
#include <iostream>
using namespace std;
class Test {
public:
Test(int a) {
p = new int;
*p = a;
}
~Test() {
cout << *p << "\n";
delete p;
p = NULL;
}
private:
int *p;
};
What is the output of the following program:
int main() {
Test t(10);
t.~Test();
return 0;
}
(a) No output. Generates segmentation fault.
(b) Outputs 10 and then generates segmentation fault.
(c) Outputs 10 in the first line and 0 in the second line.
(d) Outputs 10 in the first line and 10 in the second line.
3. What is the output of the following program:
1
