Programs can perform useful work on all kinds of data. But there must be a way to get the data into the program and to get the results out of the program. Learn how to handle input and output and your programs can work with much more interesting kinds of data.
Lessons in this Unit
2.1. Reading from standard input
4353 pts
2.2. Writing to standard output
4170 pts
2.3. Manipulating strings
6308 pts