Question

An vector of int named a that contains exactly five elements has already been declared and initialized. In addition, an int variable j has also been declared and initialized to a value somewhere between 0 and 3

Answer 1

a[j] = 2*a[j+1];

Step-by-step explanation:

The statement above assigns a new value to the element of the array indexed by j. The new value should be equal to twice the value stored in the next element of the array.