ex5_05.cpp

Visual C++ 2005的源代码

// Ex5_05.cpp
// Handling an array in a function as a pointer
#include <iostream>
using std::cout;
using std::endl;

double average(double* array, int count);      //Function prototype

int main(void)
{
   double values[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 };

   cout << endl
        << "Average = "
        << average(values, (sizeof values)/(sizeof values[0]));

   cout << endl;
   return 0;
}

// Function to compute an average
double average(double* array, int count)
{
   double sum = 0.0;                   // Accumulate total in here
   for(int i = 0; i < count; i++)
      sum += *array++;                 // Sum array elements

   return sum/count;                   // Return average
}