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#include <iostream>
class Student
{
private:
int id;
char *name;
int age;
public:
Student(int the_id,char *the_name,int the_age)
{
id = the_id;
name = the_name;
age = the_age;
}
int getage()
{
return age;
}
char * getname()
{
return name;
}
int getid()
{
return id;
}
};
class Item :public Student
{
public:
Item()
{ //此处报错“没有合适的默认构造函数可用”
}
float ave()
{
}
private:
float Chinese,math,English;
};
int main()
{
char name[20] = "Xiao Ming";
Student xiaoming = Student(101011,name,18);
std::cout<<xiaoming.getname()<<":"<<xiaoming.getid()<<" "<<xiaoming.getage();
}解决方法（一）：
Student类中添加一个不带参数的默认构造函数！
...
class Student
{
public:
Student(void)
{
}
Student(int the_id, char* the_name, int the_age)
{
id = the_id;
name = the_name;
age = the_age;
}
...解决方法（二）:
...
class Student
{
public:
Student(int the_id=0, char* the_name=0, int the_age=0)
{
id = the_id;
name = the_name;
age = the_age;
}
...