/* PLOTEMP3.C--Example from Chapter 7 of User's Guide */

/* This program creates a table and a bar chart plot from a
   set of temperature readings */

#include <conio.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>

/* Prototypes */

void get_temps(void);
void table_view(void);
void min_max(void);
void avg_temp(void);
void graph_view(void);
void save_temps(void);
void read_temps(void);

/* Global defines */

#define TRUE      1
#define READINGS  8

/* Global data structures */

int temps[READINGS];

int main(void)
{
   char choice;

   while (TRUE)
   {
      printf("\nTemperature Plotting Program Menu\n");
      printf("\tE - Enter temperatures for scratchpad\n");
      printf("\tS - Store scratchpad to disk\n");
      printf("\tR - Read disk file to scratchpad\n");
      printf("\tT - Table view of current data\n");
      printf("\tG - Graph view of current data\n");
      printf("\tX - Exit the program\n");
      printf("\nPress one of the above keys: ");

      choice = toupper(getch());
      switch   (choice)
      {
         case 'E': get_temps();  break;
         case 'S': save_temps(); break;
         case 'R': read_temps(); break;
         case 'T': table_view(); break;
         case 'G': graph_view(); break;
         case 'X': exit(0);
      }
   }
}

/* Function definitions */

void get_temps(void)
{
   char inbuf[130];
   int  reading;

   printf("\nEnter temperatures, one at a time.\n");
   for (reading = 0; reading < READINGS; reading++)
   {
      printf("\nEnter reading # %d: ", reading + 1);
      gets(inbuf);
      sscanf(inbuf, "%d", &temps[reading]);

      /* Show what was read */
      printf("\nRead temps[%d] = %d", reading, temps[reading]);
   }
}

void table_view(void)
{
   int reading;

   clrscr();       /* clear the screen */
   printf("Reading\t\tTemperature(F)\n");

   for (reading = 0; reading <= READINGS; reading++)
      printf("%d\t\t\t%d\n", reading + 1, temps[reading]);

   min_max();
   printf("Minimum temperature: \n");
   printf("Maximum temperature: \n");
   avg_temp();
   printf("Average temperature: \n");
}

void min_max(void)
{
   printf("\nExecuting min_max().\n");
}

void avg_temp(void)
{
   printf("\nExecuting avg_temp().\n");
}

void graph_view(void)
{
   printf("\nExecuting graph_view().\n");
}

void save_temps(void)
{
   printf("\nExecuting save_temps().\n");
}

void read_temps(void)
{
   printf("\nExecuting read_temps().\n");
}