SOURCE FILE: eg7.5.cpp

//DISPLAY 7.5 Outline of the Graph Program
//Reads data and displays a bar graph showing productivity for each plant.
#include <iostream>
const int NUMBER_OF_PLANTS = 4;


void input_data(int a[], int last_plant_number);
//Precondition: last_plant_number is the declared size of the array a.
//Postcondition: For plant_number = 1 through last_plant_number:
//a[plant_number-1] equals the total production for plant number plant_number.


void scale(int a[], int size);
//Precondition: a[0] through a[size-1] each has a nonnegative value.
//Postcondition: a[i] has been changed to the number of 1000s (rounded to
//an integer) that were originally in a[i], for all i such that 0 <= i <= size-1.


void graph(const int asterisk_count[], int last_plant_number);
//Precondition: asterisk_count[0] through asterisk_count[last_plant_number-1] 
//have nonnegative values.
//Postcondition: A bar graph has been displayed saying that plant
//number N has produced asterisk_count[N-1] 1000s of units, for each N such that
//1 <= N <= last_plant_number


int main( )
{
    using namespace std;
    int production[NUMBER_OF_PLANTS];

    cout << "This program displays a graph showing\n"
         << "production for each plant in the company.\n";

    input_data(production, NUMBER_OF_PLANTS);
    scale(production, NUMBER_OF_PLANTS);
    graph(production, NUMBER_OF_PLANTS);

    return 0;
}