design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts.
use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs
LO: Programming Challenge 1 - Examples.
To help us complete the program for challenge 1 we'll look at some example code that may solve some of the problems involved.
Programming Challenge 1 - Question generator.
Teachers would like a program that will generate addition questions for them so they can include them in a test. The program needs to:
Generate 20 addition questions using 2 and 3 digit numbers.
Print out these questions including the question number (1 - 20).
Print out the answers under each question so the teachers don't have to work them out.
#instructions print("___ADDITION QUESTION GENERATOR___") print("") print("Welcome to the addition question generator!") print("This program will generate 20 questions to test children") print("and provide you with the answers so you don't have to") print("think about it!") print("")
A loop that will run twenty times:
#for loop for i in range(1,21):
Generate random numbers. This will need to be included inside of the for loop so that a different number will be generated each time.
from random import randint #generate a random number between 10 and 999 num1 = randint(10, 999) num2 = randint(10, 999)
Print out the questions.
print(i, num1, "+", num2, "=")
i is the variable used in the for loop for counting through the sequence of numbers generated by the range function (1, 2, 3 ... 20)
num1 is the first random number between 10 and 999
+ character to go between the two numbers - remember that spacs will automatically be added by the print function.
num2 is the second random number between 10 and 999
= character to complete the number sentence.