Fungsi tanpa nilai balik

#include<iostream>

using namespace std;

void jari(float,float,float);

void volum(int,int);

int main()

{ float a,t,c,s,f;

cout<<"Masukkan a       => ";cin>>a;

cout<<"Masukkan t        => ";cin>>t;

cout<<"Masukkan c        => ";cin>>c;

cout<<"Masukkan s        => ";cin>>s;

cout<<"Masukkan f        => ";cin>>f;

cout<<endl;

jari(a,t,c);

volum(s,f);

}

void jari(float a, float b, float c)

{float d;

d=0.33*a*b*c;

cout<<"Jari "<<d<<endl;}

void volum(int a, int b)

{int c;

c=a*a*b;

cout<<"volum  "<<c<<endl;}