Thread: Volume of a cylinder: volume_cylinder = PI * radius2 * height

Code:

/*Name:Brian
Date:9/3/17
First Project


*/




#include <stdio.h>


int main(void) {
    double mass=0.00, acceleeration=0.00 , force=0.00,radius=0.0, height=0.0, volume=0.0, pi=3.14 ;


    //1. Promot the user for the mass and acceleration
    printf("Please enter the mass and accleeration <both floating-points values> for use in Newton's Second Law ");


    //2. Get the mass and accleration from the user
    scanf("%lf %lf", &mass, &acceleeration);


    //printf("%d %d\n", mass, acceleeration);




    //3. Mutliply the mass with accelleration
    force = mass * acceleeration;


    //4. Put it together
    printf("Newton's Second Law: force = mass*acceleeration= %lf\n",force);




    
    
    
    
    //2.1 Promot the user for the radius and height
    printf("Please enter the radius and the height <both floating-point values> for use in a volume of a cylinder equation ");


    //2.2 Get the radius and height from the user
    scanf("%lf %lf", &radius, &height);


    //2.3 Get the value of the volume
    volume = (1 / 3)*radius*pi*height*radius;
    
    
    //2.4 Put it together
    printf("Volume of a cylinder: volume_cylinder = PI* radius^2*height= %lf\n", volume);






















}

Whenever i run the volume part of my code, i get 0.000 as my answer. I'm not sure what i did wrong. Any help is welcome, thanks.

Try dividing decimals instead of integers to get an answer. In C, there is a difference: 1 / 3 in integer division is 0.

Originally Posted by whiteflags

Try dividing decimals instead of integers to get an answer. In C, there is a difference: 1 / 3 in integer division is 0.

Yea it worked, but the volume of a cylinder does not include .333333. But if it did, inputing .3333333 instead of (1/3) works, so thanks.