Priming Sugar Calculator (source code in C)

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

void main () {

float desired, residual, needed, T, sugarweight, sugarvolume;

printf ("The following program will show how much white granulated sugar (sucrose) to add to the beer for appropriate carbonation. \n \n");
printf ("Style - Volume of CO2 \n");
printf ("American ales - 2.2-3.0 \n");
printf ("British ales - 1.5-2.2 \n");
printf ("German weizens - 2.8-5.1 \n");
printf ("Belgian ales - 2.0-4.5 \n");
printf ("European lagers - 2.4-2.6 \n");
printf ("American lagers - 2.4-2.8 \n");

printf ("Enter desired volume of CO2 \n");
scanf ("%f", &desired);

printf ("Enter the temperature of the beer in degrees Fahrenheit \n");
scanf ("%f", &T);

//residual calculator based on polynomial fitting from the byo.com chart

residual = 0.0001*T*T - 0.0308*T + 2.39;

printf ("The residual CO2 is %f \n", residual);

//sugarweight is in grams
//sugarvolume is in fluid ounces

// 71.4 grams per volume

needed = desired - residual;

sugarweight = needed*71.4;
printf ("The weight of sugar required is %f g \n", sugarweight);

// sucrose density: 1 cup = 8 oz = 200g --wikipedia
// oz per gram = 25 g/oz

sugarvolume = sugarweight/25;

printf ("The volume of sugar is %f fl oz\n", sugarvolume);

}

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