Provide the code to read a series of integers from the console and add them as they are entered $($a running sum$).$ The program ends when the user types $-1.$ You need to use a while loop.

Here is a sample run:

Current Sum: $0$

Please enter the next number: $5$

Current Sum: $5$

Please enter the next number: $10$

Current Sum: $15$

Please enter the next number: $2$

Current Sum: $17$

Please enter the next number: $-1$

Done!