Name: ______________________

Honor Code Acknowledgment: _____________


             Random Quiz # 2
           CPS 100E, Fall 1995
         Due:  September 12, 1995

Problem 1: Acch, ptooey (3 pts)

The function atoi in <stdlib.h> converts a string to an
integer.  However, the value of atoi("dog") is 0.  Suppose that
you don't have access to <stdlib.h> so that you must write your
own version of atoi.  Do this using the header below.  The
function doesn't have to work with negative numbers, but you get extra
credit if it does.  The intOk parameter
 is set to true if the string passed is
a valid integer (all digits) and is set to false if the string is NOT a
valid integer.  

Thus atoi("123",x,y) should result in x
getting the value 123 and y getting the value true; whereas 
atoi("12a3",z,w) should result in w getting the value false
(the value of z in this case can be anything).


    void atoi(string s,int & value, bool & intOK)
    // postcondition: value = integer represented by string s
    //                intOk = true if s represents a valid integer
    //                otherwise intOk = false


Problem Array Max (2 pts)



Write the function MaxValue that returns the largest value stored
in the first num locations of the array a.


    int MaxValue(const Vector<int> & a, int num)
    // precondition: a contains num values
    // postcondition: returns the largest of the values stored in a