C the couple consult why application error how to modify the program-CodePudding

#include
using namespace std;
The class Circle
{
Double r;
Public:
Void the Show ()
{
Cout<" Area="& lt; <3.14 * r * r}
Computer ()
{
R=10;
}
Computer (double a)
{
R=a;
}
};
Int main ()
{
Double r1.
Cin> R1.
Circle a, b (r1);
A.S how ();
B.S how ();
return 0;
}

CodePudding user response:

Reference:

 # include & lt; iostream> 
using namespace std; 
The class Circle 
{
Private: 
Double r; 
Public: 
Void the Show () 
{
Cout<" Area="& lt; <3.14 * r * r} 
Circle ()//computer ()//class constructor name and the name of the class is the same as 
{
R=10; 
} 
Circle (double) a//computer (double a) 
{
R=a; 
} 
}; 

Int main () 
{
Double r1. 
Cin> R1. 
Circle a, b (r1); 
A.S how (); 
B.S how (); 

return 0; 
}