Write it, run it, read the output

This is a scratch drill — your code runs, nothing is graded or recorded. No test cases, no expected output, no verdict.

TASK

Process the pushes 4, 2, 7, and 1 using an int array, size, and capacity. Replace and copy the array only when size equals capacity, append the new value, and print the vector state after each push.

size=1 capacity=1 values=4
size=2 capacity=2 values=4 2
size=3 capacity=4 values=4 2 7
size=4 capacity=4 values=4 2 7 1