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- The standard C I/O functions, printf() and scanf(), require a
- format string as an argument. In the format string you specify
- the types of the variables that you want to input or output. If
- you decide to change the type of a variable, you have to change
- all of the calls to printf() and scanf() that use this variable.
- C++, on the other hand, allows you to read in or print out a
- variable without having to worry about its type.
-