Introduction To Programming 10-152-310
Learning Plan 2 : Variables and Data Types
Source Code
Demo Output
Explanation
- Lines 4-5 declare number variables. Note the lack of quotation marks.
- Line 6 declares a string variable even though the contents look like a number. The double-quotes make it a string.
- Lines 9 prints the "count" variable to the page. The write function converts the number to a string for display automatically.
- Lines 13 prints the "price" variable to the page.
- Lines 17 adds price and count together and prints the results to the page.
- Lines 21 prints the "priceString" variable to the page. Since it is already a string the write function doesn't need to convert it.
- Lines 25 "adds" the "priceString" variable to the "count" variable and prints the results to the page. However, the plus sign (+) in this case converts the number to a string and then combines both strings together. This is called concatenation.