Beginner c++ programmer: Stuck writing a class -

i have write program exercise in classes, i'm lost. have bit of experience programming in java, switch c++ syntax confusing me quite bit.

the prompt is: write definition of class , swimmingpool , implement proper-ties of swimming pool. class should have instance variables store length (in feet), width (in feet), depth (in feet), rate (in gallons per minute) @ water filling pool, , rate (in gallons per minute) @ water draining pool. add appropriate constructors initialize instance variables. add member functions following: determine amount of water needed fill empty or partially filled pool, determine time needed or partially fill or empty pool, , add or drain water specific amount of time.

i getting several build errors. understand have right not complete. here progress far.

#include <iostream> using namespace std; int main() {     swimmingpool myswimmingpool;     int length, width, depth, ratetofill, ratetodrain;      cout << "pool data: " << endl;     cout << myswimmingpool.getpooldata(5, 12,6) << endl;  }   class swimmingpool { public:     int getpooldata(int, int, int);     int getamountofwater();     int gettime();     int incrementwater(double time);     int decrementwater(double time);     int poolcapacity();     swimmingpool();     swimmingpool(int l, int w, int d, int ratefill, int ratedrain);  private:     int length;     int width;     int depth;     int ratetofill;     int ratetodrain; };  swimmingpool::swimmingpool() {     length = 0;     width = 0;     depth = 0;     ratetofill = 0;     ratetodrain = 0; }  swimmingpool::swimmingpool(int l, int w, int d, int ratefill, int ratedrain) {     length = l;     width = w;     depth = d;     ratetofill = ratefill;     ratetodrain = ratedrain; }  int swimmingpool::getpooldata(int l, int w, int d) {     length = l;     width = w;      depth = d;      cout << "length: " << l << endl;     cout << "width: " << w << endl;     cout << "depth: " << d << endl; }  int swimmingpool::getamountofwater() {     return (length * width * depth); }  int swimmingpool::gettime() {     return getamountofwater() / ratetofill; }  int swimmingpool::incrementwater(double time) {     return ratetofill * time; }  int swimmingpool::decrementwater(double time) {     return ratetodrain * time; } 

if program return type of functions not correct. please see modified code.

#include <iostream> using namespace std; class swimmingpool { public:     void getpooldata(int, int, int);     int getamountofwater();     double gettime();     double incrementwater(double time);     double decrementwater(double time);     int poolcapacity();     swimmingpool();     swimmingpool(int l, int w, int d, int ratefill, int ratedrain);  private:     int length;     int width;     int depth;     int ratetofill;     int ratetodrain; };  swimmingpool::swimmingpool() {     length = 0;     width = 0;     depth = 0;     ratetofill = 0;     ratetodrain = 0; }  swimmingpool::swimmingpool(int l, int w, int d, int ratefill, int ratedrain) {     length = l;     width = w;     depth = d;     ratetofill = ratefill;     ratetodrain = ratedrain; }  //if function not return value return type should void void swimmingpool::getpooldata(int l, int w, int d) {     length = l;     width = w;      depth = d;      cout << "length: " << l << endl;     cout << "width: " << w << endl;     cout << "depth: " << d << endl; }  int swimmingpool::getamountofwater() {     return (length * width * depth); }  double swimmingpool::gettime() {     return getamountofwater() / ratetofill; //this value double not int. if convert double int data maybe loss  }  double swimmingpool::incrementwater(double time) {     return ratetofill * time; //this value double not int. if convert double int data maybe loss  }  double swimmingpool::decrementwater(double time) {     return ratetodrain * time; //this value double not int. if convert double int data maybe loss  }   int main() {     swimmingpool myswimmingpool;     //you don't need variables     //int length, width, depth, ratetofill, ratetodrain;      cout << "pool data: " << endl;     myswimmingpool.getpooldata(5, 12,6);     return 0; }