who can answer the question,when I make the program,it displayed an error info like follows:

Question

This is the question:  and at the last there is the error. #include<iostream.h>
#include<string.h>class guess
{
private:
    long clootie;
    long chkprime;
    long count;
    int flag;
    long digit1,digit2,digit3;
public:
    guess(long init);
    long getprime(long num);
    ~guess();
};
guess::guess(long init)
{
    clootie = init;
    flag=0;
}
long guess::getprime(long num)
{
    if(num%2==0)
        return 0;
    for(count=2;count<num/2;count++)
    {
        if(num%count==0)
        {
            flag +=1;
            break;
        }
    }
    if(!flag)
        return num;
    else
        return 0;
}
guess::~guess()
{
    for(digit1=1;digit1<clootie;digit1++)
        for(digit2=1;digit2<clootie;digit2++)
            for(digit3=1;digit3<clootie;digit3++)
            {
                if(getprime(digit1)+getprime(digit2)+getprime(digit3)==clootie)
                    cout<<endl<<"The digit is:"<<clootie<<"=";
    cout<<digit1<<"+"<<digit2<<"+"<<digit3;
            }
}
void main()
{
    long n;
cout<<"Please input a digit:";
cin>>n;
guess x=new guess(n);
}The error info:Compiling...
com.cpp
D:\program\com.cpp(59) : error C2440: 'initializing' : cannot convert from 'class guess *' to 'class guess'
        No constructor could take the source type, or constructor overload resolution was ambiguous
Error executing cl.exe.com.exe - 1 error(s), 0 warning(s)

Answer 1

guess* x=new guess(n);
要么就直接在栈上定义对象，也省得后面还要delete。
guess x(n);

Answer 2

修改如下:
void main()
{
    long n;
cout<<"Please input a digit:";
cin>>n;
guess* x=new guess(n);
}