Test. .
#include<iostream> #include<conio.h> int main() { int subme; char menu; atas: clrscr(); cout<<"_____________________________________________"<<endl; cout<<"\t\tProgram luas bangun ruang"<<endl; cout<<"_____________________________________________"<<endl; cout<<"Pilih Menu Program \n"; cout<<"\n1. Luas Lingkaran\n"; cout<<"2. Luas Bujursangkar\n"; cout<<"3. Luas Segitiga\n"; cout<<"4. Luas Trapesium\n"; cout<<"5. Luas Layang-layang"; cout<<"\nPilih program yang akan dijalankan : "; cin>>subme; switch (subme) { case 1: { float r,L; cout<<"_______________________________\n"; cout<<"\nInput jari-jari : "; cin>>r; L=3.14*r*r; cout<<"Luas Lingkaran = "<<L<...