ex prog fungsi


#include<iostream.h>
#include<conio.h>
#define phi 3.14

float luas_lingkaran (float r)
{
float t;
   t=phi*(r*r);
   return(t);
}
float kel_lingkaran(float r)
{
float t;
   t=2*phi*r;
   return(t);
}
main()
{
float z,d,y;
   cout<<"masukkan nilai jari-jari=";
   cin>>y;
   cout<<"Contoh pemograman fungsi"<<endl<<endl;
   z=luas_lingkaran(y);
   d=kel_lingkaran(y);
   cout<<endl;
   cout<<"Hasil luas lingkaran:"<<phi<<"*"<<y<<"*"<<y<<"="<<z<<endl;
   cout<<"Hasil keliling lingkaran:2*"<<phi<<"*"<<y<<"="<<d<<endl;
   getch();
}

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