Question

Determine the output using C++ of the following code fragment

i)

double *pt;
double a[3] = {1.2, 2.3, 3.4}; pt = &a[1];
pt += 1;
cout << *pt << endl;

ii)

int i = 1;
while (i <= 4)
{
int num = 1;
for (int j = 1; j <= i; j++) {
cout << num << "bb";
num *= 3;
}
cout << endl;

i++;

}

Answer 1

i)

​​​​​Output:

3.4

Explanation:

pt stores address of 2.3

then pointer is incremented to point 3rd element

3rd element is printed

ii)

​​​​​Output:

1bb3bb                                                                       

1bb3bb9bb                                                                    

1bb3bb9bb27bb  

Explanation:

bb is appended between 1, 3 , 9... powers of 3 at each iteration