//Declarations for the functions in Chapter 5, Problem 10

int min(int a, int b);
// Return the minimum of a and b

double pay (int hrs, double rate);
// Return pay where hours over 40 are
// paid at 1.5 times the regular rate

char grade (double avg);
// Return a grade of 'A', 'B', 'C' 'D' or 'F'
// using 90, 80, 70, and 60 as cutoffs.

void personal_info ();
// Display your name, age, and semester
// standing neatly formatted with labels

void display_pt (double x, double y);
// Display the point with coordinates x and y in the form (x, y)

bool is_leap (int yr);
// Return true if yr is a leap year, false otherwise

double round (double x, int n);
//return x rounded to n decimal places