#include <conio.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <graphics.h>
/* Prototypes */
void get_temps(void);
void
table_view(void);
void min_max(int
num_vals, int vals[], int *min_val, int *max_val);
float avg_temp(int num_vals, int vals[]);
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)
{
clrscr();
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: ");
switch
(toupper(getche()))
{
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]);
}
}
void table_view(void)
{
int reading, min, max;
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(READINGS,
temps, &min, &max);
printf("Minimum temperature: %d\n", min);
printf("Maximum temperature: %d\n", max);
printf("Average temperature: %f\n", avg_temp(READINGS,
temps));
}
void min_max(int
num_vals, int vals[], int *min_val, int *max_val)
{
int reading;
*min_val = *max_val
= vals[0];
for (reading = 1;
reading < num_vals; reading++)
{
if
(vals[reading] < *min_val)
*min_val =
vals[reading];
else if
(vals[reading] > *max_val)
*max_val =
vals[reading];
}
}
float avg_temp(int num_vals, int vals[])
{
int reading, total = 0;
for (reading = 0; reading < num_vals;
reading++)
total +=
vals[reading];
return (float) total/reading; /* reading equals total vals */
}
void graph_view(void)
{
int graphdriver = DETECT, graphmode;
int reading, value;
int maxx, maxy, left, top, right, bottom, width;
int base; /* zero x-axis for
graph */
int vscale = 1.5; /* value to scale vertical bar size */
int space = 10; /* spacing between bars */
char
fprint[20]; /* formatted
text for sprintf */
initgraph(&graphdriver, &graphmode, "..\\bgi");
if (graphresult()
< 0) /* make sure
initialized OK */
return;
maxx = getmaxx(); /* farthest right you can go */
width = maxx
/(READINGS + 1); /* scale and allow for spacing */
maxy = getmaxy() - 100; /* leave room for text */
left = 25;
right = width;
base = maxy / 2; /* allow for neg values below */
for (reading = 0;
reading < READINGS; reading++)
{
value =
temps[reading] * vscale;
if (value >
0)
{
top = base -
value; /* toward top of screen
*/
bottom =
base;
setfillstyle(HATCH_FILL, 1);
}
else
{
top = base;
bottom = base
- value; /* toward bottom of screen
*/
setfillstyle(WIDE_DOT_FILL, 2);
}
bar(left, top,
right, bottom);
left +=(width + space); /* space over for next bar */
right +=(width +
space); /* right edge of next bar
*/
}
outtextxy(0, base,
"0 -");
outtextxy(10, maxy
+ 20, "Plot of Temperature Readings");
for (reading = 0;
reading < READINGS; reading++)
{
sprintf(fprint,
"%d", temps[reading]);
outtextxy((reading *(width + space)) + 25, maxy + 40, fprint);
}
outtextxy(50,
maxy+80, "Press any key to continue");
getch(); /* Wait for a
key press */
closegraph();
}
void save_temps(void)
{
FILE * outfile;
char file_name[40];
printf("\nSave
to what filename? ");
while
(kbhit()); /* "eat" any char
already in keyboard buffer */
gets(file_name);
if ((outfile =
fopen(file_name,"wb")) == NULL)
{
perror("\nOpen failed! ");
return;
}
fwrite(temps,
sizeof(int), READINGS, outfile);
fclose(outfile);
}
void read_temps(void)
{
FILE * infile;
char file_name[40]
= "test";
printf("\nRead
from which file? ");
while
(kbhit()); /* "eat" any char
already in keyboard buffer */
gets(file_name);
if ((infile =
fopen(file_name,"rb")) == NULL)
{
perror("\nOpen failed! ");
return;
}
fread(temps, sizeof(int),
READINGS, infile);
fclose(infile);
}
Temperature Plotting Program Menu
E - Enter temperatures for scratchpad
S - Store scratchpad to disk
R - Read disk file to scratchpad
T - Table view of current data
G - Graph view of current data
X - Exit the program
Press one of the above keys: E
Enter reading # 2: 34
Enter reading # 3: 42
Enter reading # 4: 38
Enter reading # 5: 42
Enter reading # 6: 40
Enter reading # 7: 39
Enter reading # 8: 28
Temperature Plotting Program Menu
E - Enter temperatures for scratchpad
S - Store scratchpad to disk
R - Read disk file to scratchpad
T - Table view of current data
G - Graph view of current data
X - Exit the program
Press one of the above keys: s
Save to what filename?
Contact:
Mr. Roshan P. Helonde
Mobile: +91-7276355704
WhatsApp: +91-7276355704
Email: roshanphelonde@rediffmail.com
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