# include "stdafx. H" 
//ConsoleApplication1. CPP: defines the entry point of the console application, 
//
#include  
#include  

# define M_PI 3. 14159265358979323846 
using namespace std; 

The class CFigure 
{
Public: 
Virtual char * FigureType ()=0; 
Virtual double Circumference ()=0; 
Virtual double Area ()=0; 
Virtual ~ CFigure () {} 
}; 

The class CTriangle: public CFigure 
{
Public: 
CTriangle () 
{
A=b=c=0; 
} 
CTriangle (double a, b double, double c) : a (a), b (b), c (c) {} 

Char * FigureType () 
{
Return "Triangle"; 
} 
Double Circumference () 
{
The return of a + b + c; 
} 
Double Area () 
{
Double S=Circumference ()/2; 
Return SQRT (S * (S - a) * (S - b) * (S - c)); 
} 
Private: 
Double a, b, c; 
}; 
The class CSquare: public CFigure 
{
Public: 
CSquare () 
{
A=0.0; 
B=0.0; 
} 
CSquare (double a, double b) : (a), b (b) 
{

} 
Char * FigureType () 
{
Return "Square"; 
} 
Double Circumference () 
{
Return a + 2 * 2 * b; 
} 
Double Area () 
{
Return a * b; 
} 
Private: 
Double a, b; 
}; 
The class CCircle: public CFigure 
{
Public: 
CCircle () 
{
R=0; 
} 
CCircle (double r) : r (r) 
{

} 
Char * FigureType () 
{
Return "Circle"; 
} 
Double Circumference () 
{
Return 2 * r * M_PI; 
} 
Double Area () 
{
Return r * r * M_PI; 
} 
Private: 
double r; 
}; 
Int _tmain (int arg c, _TCHAR * argv []) 
{
CFigure * figures [3]. 
Figures [0]=new CTriangle (2, 1, 3, 2, 4. 3); 
Figures [1]=new CSquare (5, 4, 6. 5). 
Figures [2]=new CCircle (8, 8); 

for (int i=0; i <3; I++) 
{
Cout & lt; <"Figure type: \ t" & lt; <"\ nCircumference: \ t" & lt; <"\ nArea: t \ \ t" & lt; return 0; 
} 

Fellow teachers, error
Error:
Severity code shows the project file line prohibits display status
Error C2664 "CTriangle: : CTriangle (CTriangle & amp; & amp;) 1 cannot be the parameter ": from" double "into" const CTriangle & amp;" ConsoleApplication1 d: \ itteam_2017 07.14 \ \ MFC of vc \ \ 2 ConsoleApplication1 \ ConsoleApplication1 \ ConsoleApplication1 CPP 100
Severity code shows the project file line prohibits display status
Error C2664 "CSquare: : CSquare (CSquare & amp; & amp;) 1 cannot be the parameter ": from" double "into" const CSquare & amp;" ConsoleApplication1 d: \ itteam_2017 07.14 \ \ MFC of vc \ \ 2 ConsoleApplication1 \ ConsoleApplication1 \ ConsoleApplication1 CPP 101
Severity code shows the project file line prohibits display status
Warning C4129 "" : do not recognize the characters of escape sequences ConsoleApplication1 d: \ itteam_2017 07.14 \ \ MFC of vc \ \ 2 ConsoleApplication1 \ ConsoleApplication1 \ ConsoleApplication1 CPP 108


Thank you teacher

CodePudding user response:

Figures [0]=new CTriangle (2.1 f to 3.2 f to 4.3 f);
Figures [1]=new CSquare (5.4 f to 6.5 f);
Figures [2]=new CCircle (8.8 f);
So try again

CodePudding user response:

If it doesn't solve, suggests that there are other errors before. From the first line of the wrong place, please post all error information

CodePudding user response:

Thanks, the problem has been solved

CodePudding user response:

I you copy the code to vs2013, guess what??

In fact you all decimal, the decimal point on the right is more than a "space",,,, get rid of these Spaces, is correct,,,,