Task 1
A teacher wants a program that allows her to enter the height of all her students and the program will display the tallest height entered.
Each day she has a different number of students.
Start with a variable called max_heightand assign it a small number, eg 0
Input the first student height and assign it to a variable, height.
While height is not equal to 0, repeat the following steps:
Compare height to max_height and if it is bigger assign height to max_height
Get the next height
Display the maximum height that was entered.
A Python programmer has followed the algorithm and developed a solution:
There are a few syntax errors. Correct the errors and then test the solution using this table of test data. Does it work properly?
| height | max_height | output |
|---|---|---|
| - | 0 | - |
| 160 | 160 | max_height is now 160 |
| 130 | - | max_height is now 160 |
| 180 | 180 | max_height is now 180 |
| -300 | - | max_height is now 180 |
| 200 | 200 | max_height is now 200 |
| 0 | - | You entered 0. The program is finished. |
Task 2
A scientific simulator generates random numbers between -5 and 5 inclusive. It counts how many numbers are negative and how many numbers are positive. It stops when the number of positive numbers or the number of negative numbers are greater than 5.
The program then displays the number of positive numbers and the number of negative numbers.
Write code for this scientific simulator.
Task 3
A bank website has a program which tells customers how many years it will take for their investment to double if it earns a certain interest every year.
For example, if a customer has an investment of $10,000 and an annual interest rate of 5%, the program will calculate how many years it will take to double the investment to $20,000
An algorithm that will help to solve the problem is:
Start with a year value at 0
Get balance from user and store in variable called balance
Create the target balance which is 2*balance
Repeat the following steps while balance is less than target
Add 1 to the year value
Compute the interest as balance multiplied by 0.05
Add the interest to the balance
Display the number of years that it will take to double the initial investment balance and the final investment amount.
Follow this algorithm to write a program for the bank.