- Variables contain either string, integer or float data
- All user input is stored as a string by default, meaning an extra step is required to convert the input to the correct data type
- For example, the program below will not output the expected result (doubling the age entered)
age = input("What's Your Age? ")
double_age = age + age
print(double_age)- This is because you shouldn’t add a number to a string of characters
- To solve this problem you convert the age to an integer as shown below
age = input("What's Your Age? ")
age = int(age) #Convert to Integer
double_age = age + age
print(double_age)- Finally, a common technique is to convert numbers back to a string before printing them out, or displaying them as part of a message
print("Your doubled age is " + str(double_age))Tasks
- Type in the first example and observe the output. Why is it incorrect?
- Type in the second example and observe the output. What has changed?
- Type in the final line to print out the doubled age as part of a sentence
- Save and label your code
Extension
Can you modify the program to ask 2-3 questions, and print them out as part of a sentence?