PROGRAMMING:Parametric function design

```
Please design print_ Star (int n) function, function function for the output of N asterisks.
Design print_ Space (int n) function, the function function output n spaces.
Then input integer n in the main function and output n lines of graphs with the following shapes. example
If input 7, the output is as follows.
*
***

**
****
*
***
```
###Input example:
```in
fifteen
```
###Output example:
The corresponding output is given here. For example:
```out
*
***

**
****
*
***

**
****
*
***

**
****
```







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