Problem 2 (the using program must be c+++) show and explain it please

Assume you are given the following function:

char doThat(int a, double &b, int &c) {

if (a > c) { c = (int)b*a--; return a;

} else {

b = b*(++a);

c = (int)b;

return b;

}

}

1 What are the input and output parameters to the function doThat?

2 Write a main where you make a call to the function with appropriate parameters of your choice.

3- Trace a call to the function with parameters of your choice.