Is this the right code in computing the volume of a sphere in c?

Question

The problem is: - Draw a flowchart that computes and print the volume of a sphere. - Use the formula: V=r^3 * pi * 4/3. (Where pi is approximately equivalent to 3.1416).

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

int main()

{

    float radius, volume;


    printf("Enter the volume of sphere: ");
    scanf("%f", &radius);
    volume = (4.0/3) * (3.1416) * radius * radius * radius;
    printf("Volume of a sphere is : %.3f", volume);

    return 0;
 }

This is my assignment in our school i'm asking if this is the right code for the problem. — Mr.Nerd Programmer, Jun 29 '17 at 00:45
@EvilTeach: Maybe some textual representation? I'd like to see the GUI tool which generates the FC from this. — too honest for this site, Jun 29 '17 at 01:45
I'm confident your teach would tell you. We are not a homework verification service. — too honest for this site, Jun 29 '17 at 01:45
Minor: `3.1416` is a fairly coarse approximation of pi. Could use `acos(-1)` or 3.1415926535897932384626433832795` — chux - Reinstate Monica, Jun 29 '17 at 03:42
As [requested](https://stackoverflow.com/questions/44814602/is-this-the-right-code-in-computing-the-volume-of-a-sphere-in-c#comment76610527_44814602): @Olaf [code2flow.com: GUI tool which generates the FC from this](https://code2flow.com/72gsnw.png) — chux - Reinstate Monica, Jun 29 '17 at 03:46
There isn't exactly a lot to flowchart in such a simple program. — Jonathan Leffler, Jun 29 '17 at 04:16
Perhaps a flow chart would expose a fault `"Enter the volume of sphere: "` which should be `"Enter the radius of sphere: "` — Weather Vane, Jun 29 '17 at 05:03
@EvilTeach A compliant C implementation must _not_ define a pi constant like `#define M_PI 3.14...` See [this](https://stackoverflow.com/q/29264462/2410359) — chux - Reinstate Monica, Jun 29 '17 at 13:34
@EvilTeach with MSVC the `math.h` header will only define `M_PI` (and others) if the programmer enables its extensions with `#define _USE_MATH_DEFINES` before `#include ` — Weather Vane, Jun 29 '17 at 15:24

score 0 · Answer 1 · answered Jun 29 '17 at 21:00

If you're gonna include math.h, might as well use it.

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

int main()

{

    float radius, volume;


    printf("Enter the volume of sphere: ");
    scanf("%f", &radius);
    volume = (4.0/3.0) * (M_PI) * pow(radius, 3);
    printf("Volume of a sphere is : %.3f", volume);

    return 0;
}

Is this the right code in computing the volume of a sphere in c?

1 Answers1