3-1
# include <iostream>
using namespace std;
int main () {
const char PI = 3.14;
char Mychar;   
char * Mystring;
int Myinteger;
double Mydouble;

Mychar ='c';
Mystring ="mengungkap rahasia c++";
Myinteger =21;
Mydouble = 21.0378;

cout<<"Mychar        : "<<Mychar<<endl;
cout<<"Mystring        : "<<Mystring<<endl;
cout<<"Myinteger    : "<<Myinteger<<endl;
cout<<"Mydouble        : "<<Mydouble<<endl;

return 0;
}