can't you explain me what wrong with my string??

[badstudent314]

it had problem with the second object!
i can't input member u of the second object;

  //check.h;
#ifndef CHECK_H_
#define CHECK_H_
class check{
public:
	void print() const;
	void set();
	check();
	check(char *, int);
private:
	char *u;
	int v;
};
 //check.cpp
#include <iostream>
#include <cstring>
#include <stdio.h>
#include "check.h"

using namespace std;

void check::set(){
	cout<<"Enter u:";
	fflush(stdin);
	cin.getline(u,10);
	cout<<"Enter v:";
	cin>>v;
}

check::check(){
	u= new char [10];
	strcpy(u,"*");
	v=1;
}

check::check(char *a,int b){
	u = new char [30];
	u=a;
	v=b;
}

void check::print() const{
	cout<<"u:"<<u;
	cout<<"v:"<<v;
}
#endif

//main.cpp
#include <iostream>
#include "check.h"

using namespace std;

int main() {
	check object1,object2;
	object1.set();
	object2.set();//<== i can't set the char sequence for object2.u;
	object1.print();
	object2.print();
	return 0;
}

[iQChange]

Here, all clear.

#include <iostream>
#include <cstring>
#include <stdio.h>
#include <iostream>
using namespace std;

class check
{
    public:
    void print() const
    {
        cout<<"u:"<<u<<endl;
        cout<<"v:"<<v<<endl;
    }
    void set()
    {
        cout<<"Enter u:";
        fflush(stdin);
        cin.getline(u,10);
        cout<<"Enter v:";
        cin>>v;
    }
	check()
    {
        u= new char [10];
        strcpy(u,"*");
        v=1;
    }
    check(char *a,int b)
    {
        u = new char [30];
        u=a;
        v=b;
    }

    private:
	char *u;
	int v;
};

int main() {
	check object1,object2;
	object1.set();
	object2.set();
	object1.print();
	object2.print();
	return 0;
}

Same thing you typed. I can use the program ok.

[badstudent314]

my problem like this:
Enter u:char
Enter v:1
Enter u:Enter v:1 <=== here , i can't enter the second string;