C Program to Create Calorimeter

Question:

Create a calorimeter to tell the “user” the pounds lost. It doesn’t ACTUALLY measure the number of calories you burn or the number of calories you ingest. Instead, it makes four assumptions:

1) When walking, you burn 5 calories/minute.

2) When standing in line, you burn 2 calorie/minute.

3) When you are consuming solid food, you ingest 40 calories/minute.

4) When you are consuming a drink, you ingest 20 calories/minute.

The calorimeter is “smart enough” to know which of the four activities you are engaging in at any point in time, and at the end of the day, compiles a tally of how many minutes you spent doing each of these four activities. Write a program that takes these four values as input and outputs the pounds lost (we want a positive message for our clients). If the user has gained weight, simply print out a negative number for weight lost. Note, use the following constants for this problem:

#define WALK_CAL 5

#define STAND_CAL 2

#define DRINK_CAL 20

#define FOOD_CAL 40

#define CALS_PER_POUND 3500

 

Input Specification

1. All four values will be non-negative integers less than 720, representing the number of minutes spent for each of the four activities.

Output Specification

Output a single line of the following format telling the user how many pounds they lost, rounded to 3 decimal places.

You lost X.XXX pounds today!

The code:

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#include <stdlib.h>
#include <stdio.h>
 
//Constants
#define WALK_CAL 5
#define STAND_CAL 2
#define DRINK_CAL 20
#define FOOD_CAL 40
#define CALS_PER_POUND 3500
 
main (void) {
     //Declare variables
     int walk, stand, drink, food;
     float cal_gain, cal_lost, pounds_lost, final_cal;
 
     //Ask user how many minutes walking
     printf("How many minutes were you walking?\n");
     scanf("%d", &walk);
 
     //Ask user how many minutes tanding
     printf("How many minutes were you standing?\n");
     scanf("%d", &stand);
 
     //Calculate lost calories
     cal_lost=(walk*WALK_CAL)+(stand*STAND_CAL);
 
 
     //Ask user how many minutes drinking
     printf("How many minutes were you drinking?\n");
     scanf("%d", &drink);
 
     //Ask user how many mnutes eating
     printf("How many minutes were you eating?\n");
     scanf("%d", &food);
 
     //Calculate gained and lost calories
     cal_gain=(drink*DRINK_CAL)+(food*FOOD_CAL);
 
     //Calculate final calories
     final_cal=(cal_lost)-(cal_gain);
     //printf("Total Calories %.0f\n", final_cal);
 
     //Convert to pounds
     pounds_lost=(final_cal/CALS_PER_POUND);
 
     //Show result
     printf("You lost %.3f pounds today!\n", pounds_lost);
 
 
system("pause");
return 0;
}

Output Sample