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Bloomberg LP Interview Question






Comment hidden because of low score. Click to expand.
1
of 1 vote

int main(){
	int *myArray;
	myArray = new int[2]{ 100, 200 };
	int& ref = myArray[0];
	cout<<ref<<endl;
	delete[] myArray;
	cout<<ref;  \\dangling reference
}

- SamOnYoun November 24, 2010 | Flag Reply
Comment hidden because of low score. Click to expand.
1
of 1 vote

It`s not C++ code: dynamically allocated arrays cannot been initialized. And in commens wrong slashes. More simple code to show problem:

int *p = new int(11);
int& ref = *p;
cout << ref; // output 11
delete p; // <--- here p is being deleted and reference ref is no more alive
cout << ref; // output garbage

- Anonymous November 24, 2010 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

Well, the comments are wrong. but it is C++ code. you can initialize an array as "myArray = new int[2]{ 100, 200 };"
it is called initialization list. compile your code with -std=c++0x switch in Makefile.

- SamOnYoun November 24, 2010 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

@THE ONLY EXISTING Anonymous to date in the second line of the program
int & ref = *p;
*p would try to stoe the value pointed by the pointer dont u think into reference ref which lead to compile error , correct me if am wrong

- Deric January 25, 2014 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

#include <iostream>

using namespace std;

int main()
{
int& sum(int a, int b);
int &a = sum(5,6);
cout << a << endl;
return 0;
}
int& sum(int a, int b)
{
int c = a + b;
return c;
}

- PK August 21, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

"int &a" in main() is dangling reference.

- PK August 21, 2013 | Flag


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