Question

What is a "sentinel value"? What is the format for a while loop? What is the format for a do-while loop? .Write some instructions which will read a series of numbers (type double) and add them to a total until the number -1 is entered The - 1 is not added to the total. Write some instructions which will read a series of numbers (type double) and add them to a total until the character control-d is entered. Write a loop that will print 10 lines of output The output-is a table converting miles to kilometers (each mile is 1.609 kilometers). Use a counter to count the miles from 1 to 10 and print the distance in miles and kilometers. For example, the first line of output should be. 1 mile = 1.609 kilometer. Write some code (including a loop) that will read numbers from the user and count how many numbers are positive and how many are negative. When the user enters a zero, end the loop and print the totals. Explain what the following instructions do. Explain what the following instructions do.