Question

I'm having trouble rounding the numbers i'm getting in my output

here's my code:

#include<stdio.h>

int main() {

char gender;

float a1, a2, a3, a4, a5;

float waistmeasurement, wristmeasurement, hipmeasurement, forarmmeasurement;

float B, bodyweight, Bodyfat, Bodyfatpercentage;

  

printf("This program determines the body fat of a person.Enter your gender (f|F|m|M): ");

scanf("%c", &gender);

printf("\n");

  

if(gender=='F' || gender=='f'){

printf("Enter body weight (in pounds): \n");

scanf("%f", &bodyweight);

printf("Enter wrist measurement at fullest point (in inches): \n");

scanf("%f", &wristmeasurement);

printf("Enter waist measurement at navel (in inches): \n");

scanf("%f", &waistmeasurement);

printf("Enter hip measurement at fullest point (in inches): \n");

scanf("%f", &hipmeasurement);

printf("Enter forearm measurement at fullest point (in inches): \n");

scanf("%f", &forarmmeasurement);

a1=(bodyweight * 0.732) + 8.987;

a2=(wristmeasurement/3.140);

a3=(waistmeasurement * 0.157);

a4=(hipmeasurement * 0.249);

a5=(forarmmeasurement * 0.434);

B=(a1+a2-a3-a4+a5);

Bodyfat = bodyweight - B;

Bodyfatpercentage=(Bodyfat*100)/bodyweight;

printf("Body fat: %.7lf\n", Bodyfat);

  

printf("Body fat percentage: %.7lf\n", Bodyfatpercentage);

  

}

else if(gender=='M' || gender=='m'){

printf("Enter body weight (in pounds): \n");

scanf("%f", &bodyweight);

printf("Enter waist measurement at fullest point (in inches): \n");

scanf("%f", &waistmeasurement);

a1=(bodyweight * 1.082) + 94.42;

a2=waistmeasurement * 4.15;

B=a1-a2;

Bodyfat = bodyweight - B;

Bodyfatpercentage=(Bodyfat*100)/bodyweight;

printf("Body fat: %.7lf\n", Bodyfat);

  

printf("Body fat percentage: %.7lf\n", Bodyfatpercentage);

}

else{

printf("Invalid gender code.");

return(0);

}

  

return(0);

}

Here are the outputs i'm trying to get:

This program determines the body fat of a person.Enter your gender (f|F|m|M): m

Enter body weight (in pounds):

200

Enter waist measurement at fullest point (in inches):

32

Body fat: 21.980000

Body fat percentage: 10.990000

Here's the output i'm trying to get for female:

This program determines the body fat of a person.Enter your gender (f|F|m|M): f

Enter body weight (in pounds):

110

Enter wrist measurement at fullest point (in inches):

32

Enter waist measurement at navel (in inches):

30

Enter hip measurement at fullest point (in inches):

36

Enter forearm measurement at fullest point (in inches):

20

Body fat: 15.295917

Body fat percentage: 13.905379

Answer 1

If you have any doubts, please give me comment...

#include <stdio.h>

#include <math.h>

int main()

{

char gender;

float a1, a2, a3, a4, a5;

float waistmeasurement, wristmeasurement, hipmeasurement, forarmmeasurement;

float B, bodyweight, Bodyfat, Bodyfatpercentage;

printf("This program determines the body fat of a person.Enter your gender (f|F|m|M): ");

scanf("%c", &gender);

printf(" ");

if (gender == 'F' || gender == 'f')

{

printf("Enter body weight (in pounds): ");

scanf("%f", &bodyweight);

printf("Enter wrist measurement at fullest point (in inches): ");

scanf("%f", &wristmeasurement);

printf("Enter waist measurement at navel (in inches): ");

scanf("%f", &waistmeasurement);

printf("Enter hip measurement at fullest point (in inches): ");

scanf("%f", &hipmeasurement);

printf("Enter forearm measurement at fullest point (in inches): ");

scanf("%f", &forarmmeasurement);

a1 = (bodyweight * 0.732) + 8.987;

a2 = (wristmeasurement / 3.140);

a3 = (waistmeasurement * 0.157);

a4 = (hipmeasurement * 0.249);

a5 = (forarmmeasurement * 0.434);

B = (a1 + a2 - a3 - a4 + a5);

Bodyfat = (bodyweight - B);

Bodyfatpercentage = (Bodyfat * 100) / bodyweight;

printf("Body fat: %f ", Bodyfat);

printf("Body fat percentage: %f ", Bodyfatpercentage);

}

else if (gender == 'M' || gender == 'm')

{

printf("Enter body weight (in pounds): ");

scanf("%f", &bodyweight);

printf("Enter waist measurement at fullest point (in inches): ");

scanf("%f", &waistmeasurement);

a1 = (bodyweight * 1.082) + 94.42;

a2 = waistmeasurement * 4.15;

B = a1 - a2;

Bodyfat = ceilf((bodyweight - B)*100)/100;

Bodyfatpercentage=(Bodyfat*100)/bodyweight;

printf("Body fat: %f ", Bodyfat);

printf("Body fat percentage: %f ", Bodyfatpercentage);

}

else

printf("Invalid gender code.");

return (0);

}