**CS 29**

**Feb. 25, 1997**

Working in small groups, design flowcharts and pseudo-code to solve each of the following problems. The first two problems are used within the problems following them.

- Determine which of two numbers is larger, and print the larger
number.
A simple

`if/else`will do the trick. - Read numbers from a keyboard until a zero is input, then you are
finished.
A simple

`while`will do. Your algorithm doesn't have to ``do'' anything with the numbers other than read them in and compare them to zero to determine if it is finished. - Read positive numbers from the keyboard until the
user enters a zero value, then print the largest number read.
This combines the previous two problems. The

`if/else`will go into the body of the`while`loop.Here is a hint: At the start, the largest number read is the

*first*number read. Compare the current largest number to the number just read. The larger of them is the new current largest number. To visualize this, play a game where one person gives numbers to the second. When the first person gives a zero to the second person, the second person should say what the largest number given was. - Print the factors of an integer which is input from the keyboard.
For example, if the input is

`42`, the output should be`2 3 7`.Think about how you would factor a number like 30. Here is the general idea: see if the number is divisible by 2, then if it is divisible by 3, by 4, by 5, etc. (i.e., use a loop). Within the loop, you will need an

`if/else`. Make sure that your solution works for numbers with repeated factors, such as 12 (). - Print the factors of numerous integers which are input from the
keyboard. The user inputs integers one at a time. After each integer is
input, you are to output the factors. If the input is zero, you are
finished.
This problem makes use of the previous one and the second one. One

`while`loop goes inside another.

Sat Feb 22 20:35:24 EST 1997