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Week: 3 At a Glance > Day 5
Day 5
Quiz
| A1: | The function prototype declares the function; the definition defines it. The prototype ends with a semicolon; the definition need not. The declaration can include the keyword inline and default values for the parameters; the definition cannot. The declaration need not include names for the parameters; the definition must. |
| A2: | No. All parameters are identified by position, not name. |
| A3: | Declare the function to return void. |
| A4: | Any function that does not explicitly declare a return type returns int. You should always declare the return type as a matter of good programming practice. |
| A5: | A local variable is a variable passed into or declared within a block, typically a function. It is visible only within the block. |
| A6: | Scope refers to the visibility and lifetime of local and global variables. Scope is usually established by a set of braces. |
| A7: | Recursion generally refers to the ability of a function to call itself. |
| A8: | Global variables are typically used when many functions need access to the same data. Global variables are very rare in C++; after you know how to create static class variables, you will almost never create global variables. |
| A9: | Function overloading is the ability to write more than one function with the same name, distinguished by the number or type of the parameters. |
