Passing an array to a function : function parameters « Function « C++ Tutorial






#include <iostream>
using std::cout;
using std::endl;

double average(double array[], int count);    

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

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

  return 0;
}

double average(double array[], int count) {
  double sum = 0.0;                        
  for(int i = 0 ; i < count ; i++)
    sum += array[i];                       

  return sum/count;                        
}
Average = 5.5








7.3.function parameters
7.3.1.Passing int by value
7.3.2.Define function to accept three int parameters
7.3.3.Pass a pointer to a function.
7.3.4.Pass variable address to a function
7.3.5.Pass int array to a function
7.3.6.Declare int array parameter for a function without indicating the array length
7.3.7.Function parameter: Use int pointer to accept an array
7.3.8.Use array as function's parameter
7.3.9.Change the contents of an array using a function
7.3.10.Pass a string to a function: Invert the case of the letters within a string
7.3.11.Change a call-by-value parameter does not affect the argument
7.3.12.Demonstrate the pointer version of swap(): Exchange the values of the variables pointed to by x and y
7.3.13.Using reference parameters
7.3.14.Passing a two-dimensional array to a function
7.3.15.Passing an array to a function
7.3.16.var args has to be the last one
7.3.17.the use of ... and its support macros va_arg, va_start, and va_end
7.3.18.Handling an array parameter as a pointer