MENU

#include <iostream>

using namespace std;

 int mojemenu(){
 	int odp;

 	cout<<"\==========MENU GLOWNE===========/\n"
 	<<"0 - wyjscie"<<endl
 	<<"1 - pole kola"<<endl
 	<<"2 - pole kwadratu"<<endl
 	<<"3= pole trapezu"<<endl;

 	cin>>odp;
 	return 0;}

 	void polekola(){
 		float r;

 		cout<<"\n======[ POLE KOLA ]======\n";
 		cout<<"r=";
 		cin>>r;

 		cout<<"P="<<3.14*r*r;
 		cout<<endl;
 	}
 	void poletrapezu(){
 		float a,b,h;

 		cout<<"\n=======[ POLE TRAPEZU ]=======\n";
 		cout<<"a=";
 		cin>>a;
 		cout<<"b=";
 		cin>>b;
 		cout<<"h=";
 		cin>>h;
 		cout<<"P=" << (a+b)*h/2;
		 }



int main(){

int wybor;
wybor=mojemenu();
while (wybor!=0)
{
	switch(wybor){
		case 1: polekola();
		break;
		case 2: poletrapezu();
		break;
	}
	wybor=mojemenu();
	}

return 0;
}