开辟空间

#include<iostream.h>
#include<stdlib.h>
class time
{
private:
    int hour;
    int minute;
    int sec;
public:
    void input(time *p);
    void output(time *p);
};

void time::input(time *p)
{
    cout<<"please enter hour";
    cin>>p->hour;
    cout<<"please enter minute";
    cin>>p->minute;
    cout<<"please enter sec";
    cin>>p->sec;
}

void time::output(time *p)
{
    cout<<p->hour<<":"<<p->minute<<":"<<p->sec<<endl;
}

int main()
{
    time *p;
    p=(time*)malloc(sizeof(int));
    input(p);
    output(p);
    free(p);
    return 0;
}