// C++ stdexcept Example

//MinException.cc                            

#include <iostream>
#include <stdexcept>
using namespace std;

int minArray( int*, int ) throw (invalid_argument);

int main()
{
    int data[] = {4,3,2,1,0,5,6,7,8,9};
    int size = sizeof(data)/sizeof(data[0]);
    cout << "C++ version: min is "
         << minArray( data, size ) << endl;

    int data1[] = {13};
    int size1 = sizeof(data1)/sizeof(data1[0]);
    cout << "C++ version: min is "
         << minArray( data1, size1 ) << endl;

    int data2[] = {};
    int size2 = sizeof(data2)/sizeof(data2[0]);
    cout << "C++ version: min of empty array result is";                          //(C)
    try {
             minArray( data2, size2 );
    } catch (invalid_argument e) {
        cout << " exception: "   
             << e.what() << endl;
    }

    return 0;
}

// preconditions:  a really is an int array
//                 n really is the size of a
// postconditions: if n < 1 throw invalid_argument
//                 else return value is min value in a
int minArray(int* a, int n) throw (invalid_argument) {
    if (n <1) throw invalid_argument("minArray: empty argument");
    int min = a[0];
    int i;
    for(i=1; i<n; i++ )
        if (min > a[i]) {
           min = a[i];
        }
    return min;
}