/*********************
 * Name: Geoff Towell
 * Purpose: Convert Celcius to Fahrenheit
 * Wrttten: August 5, 2019
 * Modified:
 * NOTE: this program can go horribly wrong on bad user input.  It would be must better to protect!!! 
 *********************/

#include <stdio.h>
#define FREEZING 32.0
#define SCALE 1.8
#define CC(v) (FREEZING + SCALE*v)

int main(void)
{
    double f;
    int cLow, cHigh;
    printf("Enter the lowest and hifgest Celcius temperatures: ");
    scanf("%d %d", &cLow, &cHigh);
    printf("%10s%10s\n", "Celcius", "Fahren");
    for (int ci=cLow; ci<cHigh; ci=ci+10)
    {
	f = CC(ci);
	printf("%10d%10.2f\n", ci, f);
    }
    return 0;
}